Dns ns record example

Dns ns record example. org created an SOA and a set of NS records at example. an NS record maps a name to another nameserver, i. A DNS NS record is a type of resource record in the Domain Name System (DNS) that identifies a name server responsible for the resolution of queries for a particular hostname. Whenever you delegate a domain to DNSimple, the TLD authorities place NS records for your domain in the TLD name servers pointing to us. Go to DNS > Records. Most website owners won’t need to use all of them. com *注：DNSゾーンにNSレコードがあり、それが稼働していないネームサーバーを指している場合、それはあなたのドメインのためのコンタクトポイントが存在しないことを意味します。 Dec 12, 2012 · 30. Redirect the NS record to another target domain. For example, DNS A records will have an "A" in this field. If you want to delegate the subdomain www. If a website has an IPv6 address, it will instead use an Mar 28, 2023 · These two NS record sets exist in the DNS at the same time at the same name. Record type. (note the trailing dot) for your public website www. A domain or owner name that specifies the canonical or primary name for the owner. com’ is responsible for handling mail for ‘example. NS is the record type. Dec 29, 2020 · In this example, we added a DKIM public key to the hostname dk1024. Jan 13, 2022 · View information about the DNS A address records. DNS resolvers will query the servers listed in the NS records of a domain name for specific DNS records such as A, AAAA, MX, TXT. The NS records are listed below the Non-authoritative answer heading. For example, there are the following entries delegating dnsimple. Example: yourdomain. yourprovider. Records for the zone are listed on the Zone details page. com 3600 IN AAAA 2001:db8::1. com, run the following command: Remove-DnsServerResourceRecord -name "Example" -Zonename "contoso. ). 8. A new address record, known as an 'A' record, is created to resolve a host name to an IPv4 address. Jul 28, 2022 · The NS record points to the nameserver holding all the DNS files and records belonging to a domain. For example ns1. com’. DNS allows the owner of a zone to use NS records to delegate a subdomain to a different name The "A" stands for "address" and this is the most fundamental type of DNS record: it indicates the IP address of a given domain. Another notation is also possible: Apr 9, 2019 · The most common modifier is “redirect”, which is used to replace the SPF of a domain with the SPF of another domain. The second variant of DNS cache poisoning involves redirecting the nameserver of another domain unrelated to the original 6 days ago · There are many types of DNS records, each serving a specific purpose. farsightsecurity. From the popout menu, click the DNS Settings link. The "A" in A record stands for "address. An example of an NS record may look like the following. e. Most other DNS records only specify a server or an IP address, but SRV records include a port at that IP address as well. NS records identify an authoritative name server for a domain (more correctly, a DNS zone). Dec 29, 2023 · They compare the serial number inside their SOA records, and if they can SOA records with lower numbers, they will update to the latest version and update all the DNS changes. Supported DNS record types. Editing an NS Record Existing NS records are displayed in the DNS area of the respective domain. For example: The A records for the subdomain are only required as glue records for nameservers that are located in the subdomain of the current zone that is being delegated. (Optional) If the delegated nameserver has DNSSEC Dec 15, 2023 · In this example, we’ve asked the DNS server to return the MX record for ‘example. cloudflare. Click the zone where you want to add a record set. The nameserver also contains other records like the A record, DNS MX record, TXT record, and SOA record. Type nslookup -q=ns example. AAAA. The domain is resolved to an IP address. Jan 31, 2024 · Click on the domain name you wish to create an NS records for. Route 53 looks in the hosted zone for the domain (example. The DNS ‘text’ (TXT) record lets a domain administrator enter text into the Domain Name System (DNS). 0. So in your example, dns. 1. Sep 1, 2022 · This is the correct mode to use in scripts and applications requiring accurate DNS information. You'll notice that all of our command examples here have "+noall What’s an NS Record? An NS record delegates a subdomain to a set of name servers. Example of an MX record: The 'priority' numbers For example, www if you want to create the record for www. If you change hosting providers to a company other than where you have registered your domain, you would need to update the NS records. There are lof of types of DNS records, let’s explain each one of them brevfly: A records; AAAA records; CNAME records; NS records; MX Nov 25, 2023 · DNS-Lookup is a tool for performing deep DNS record analysis, offering in-depth details about standard DNS record types. An NS record or name server record identify which name servers are authoritative for a zone. An MX record is a mail exchange record that directs email to a mail server. An NS record, or name server record, maps a domain name to a list of DNS servers authoritative for the named domains Jan 31, 2024 · To create a new subdomain, you would first add the subdomain content at your host. For example, a DNS record lookup for the domain example. NS 记录 A DNS zone transfer is the process of sending DNS record data from a primary nameserver to a secondary nameserver. noam. com to our name servers in the . To remove the DNS record example. com” in reverse DNS. IN A 192. com”. com returns the following result: Fig. 41. Jun 15, 2023 · Here's how to remove a DNS resource record using the Remove-DnsServerResourceRecord PowerShell command. At the point of delegation for either a subdomain of the zone or in the zone's parent in which case they are non-authoritative. edu. . PtrRecord[] SOARecord: The SOA record in the record set. Email servers query the domain's DNS records to see the DKIM record and view the public key. Vendor-specific DNS records. xyz. Import. 9. Jul 15, 2012 · I'm not sure how you've set up the records in your zone, but each NS record points to an A record. Click Add standard. com) are set directly on the domain’s registrar, as well as through NS records. The command tells us that the server ‘mail. When a user searches a domain name or URL or takes action related to a domain name in a web browser, this is the beginning of a DNS query. Example 5: Check AAAA record of a domain. tld . Create a DNS record. TXT records were initially created for the purpose of including important notices This example assumes there are 2 Conferencing Node s, thus 2 DNS A‑records are required. Jul 26, 2013 · The IP address resides in an A record in a zone file on ns1. com" -RRType A Here's how to remove a record named example in the contoso. Jul 31, 2018 · If you change hosting to somewhere other than where you registered your domain, you would need to update the NS records. For example, when the administrator on abc. com) and finds the NS record for the subdomain (acme. admin" -IPv4Address "10. A. Deep DNS lookup of any URL. com and noam. For example, the administrator for example. They serve as a record and set of commands on how to handle DNS queries. The SOA record is transferred first. com NS record in the hosted zone for the domain, example. By default, only A, AAAA, CNAME, TXT, NS, MX and SOA records are shown, but you can select additional record types. 21" VERBOSE: Adding DNS resource record host21. It indicates the format of the data and it gives a hint of its intended use. Select Review + create and then select Create. com" -A -Name "Host21. An NS record specifies the name servers, or servers that provide DNS services, for a domain or subdomain. Using the python dir () built-in is your friend and one way to figure out what attributes exist in the DNS response object - handy when API Mar 3, 2022 · As of 3 March 2022, here are the glue records for adns1,2,3,4. Play around with it and try the following command: $ nslookup -type=MX <Target> <DNS Server> In the below example, we are querying any DNS record type for GoDaddy. Aug 23, 2022 · Blogs. example. As aforementioned, an NS record (nameservers) specifies which server is in control of processing queries for a domain. DNSKEY: RFC 4034. For Resource Record Type, select CNAME. abc. Mar 28, 2023 · The NS or “name server” DNS record type is used to specify the authoritative name servers for a domain. Type. com name servers: We Jan 20, 2011 · an A record maps a name to an IP address. To create an 'A These include popular public DNS servers, the authoritative DNS server for the given domain, and local DNS servers all around the world. Route 53 gets the name servers from the acme. 2325716184 10000 2400 604800 1800. Data . The file is directly updated when you edit DNS records on Route 53 or whatever service hosts your DNS. SrvRecord[] targetResource: A reference to an azure resource from where the dns resource value is taken Feb 29, 2024 · The example below discovers the MX records (Mail eXchange or email servers) of the target. Design Services; eCommerce Design For example, Alibaba Cloud DNS is used to resolve dns-example. This type of TXT record hosts public keys attached to specific domains. com zone using DNS Manager. First NS record: Select NS in the Type drop-down menu. Zone transfers take place over the TCP protocol. 3 days ago · Cloud DNS supports the following types of records. (1) “A” Records: These records map domain names to traditional (IPv4) “dotted quad” addresses. It tells DNS resolvers which servers to contact when it's looking for DNS records for that domain name. Jun 2, 2023 · Select the domain that contains the subdomain to be delegated. read - (Defaults to 5 minutes) Used when retrieving the DNS NS Record. In the following section, we will show you examples of how to search for the most common records, such as A (the IP address), CNAME (canonical name), TXT (text record), MX (mail exchanger), and NS (name servers). NS RRs appear in two places. " An A record shows the IP address for a specific hostname or domain. Private zone. Next, DNS records are created for your domain inside the DNS zone. edu zone as well as in the wisc. Aug 5, 2019 · NS record or Nameservers. -type=any: View all available records. For DNS Name, enter www. Host IP address. 40. com is the value of the record. Description. The fundamental DNS records that map your root domain name and sub-domains to IPv4 and IPv6 addresses. edu zone, where the glue record is kept. You would create at least two records since you need a minimum of two nameservers for it to resolve. . px02. DNS (Domain Name System) entries take a human-friendly name, such as store. net. Mail exchange (MX) Record. In Windows DNS, you are first asked to provide the Domain that you are delegating: Next you are asked for the details of the server you are delegating to: When this is complete, you have an NS record that Aug 23, 2022 · NS（名称服务器）记录指定了一个域的权威名称服务器。. The abbreviation MX stands for mail Jul 6, 2019 · An SOA record is used by slave or secondary domain servers and points to the primary zone server and contains all the required parameters for syncing with it, such as refresh timings. com delegated authority for the noam. Next to the record that you want to delete, select the checkbox. 1 and 1. i. SOA record: This record stores important information about the DNS zone (your domain). Querying NS Records. You will have to change the A record for ns1. admin of type A in zone contoso. Aug 17, 2022 · The following is an example of a nameserver (NS) record: example. resolves to 192. Example 2: Check DNS Record. Each zone must have an DNS records exist as text-based files known as “zone files” written in DNS syntax. Aug 22, 2016 · Zones can contain many NS records, but it should contain at least one NS record for a DNS zone. Value of 1: Record holds a DNS zone key. e. nameserver. com, the A record currently returns an IP address of: 104. When a computer queries internalDNS it delegates the resolution of the DN to externalDNS. DKIM records also act as a security measure by ensuring emails aren’t tampered with during the delivery process. It’s very useful in case you want to apply the same SPF record to different hosts/domains. Like a number of other DNS record types, the original DNS Oct 19, 2020 · The type of DNS record. It may take a minute to create the zone. Wildcard DNS records. www. NS records cannot point to CNAME records. Name servers for the root domain (like example. The domain name for the IP address 142. For instance, to find the domain name of the 142. to your external address. 198. They need to serve the following records: a Start of Authority SOA record for the sub-domain. IN NS noamdc1. This is what allows different organizations to own different domain names. -type=ptr: View Pointer records. Should a client submit a request, the responding server receives the information from precisely this data file. DNS record types. To keep this short and simple, we won’t spend time explaining how to look up “A” records, nor how to interpret things like the “3600” in 3 days ago · In the Google Cloud console, go to the Cloud DNS page. A record. The serial number tells the secondary server if its version needs to be updated. The Set-DnsServerResourceRecord cmdlet changes a resource record object located in a Domain Name System (DNS) zone. This is the specific data associated with the record. com on ROOT server. These keys sign emails digitally. It specifies a TTL value and enables a time stamp for the record. -type=soa: View Start of Authority records. 250. 210. These should at minimum point your root domain and www sub-domain to web server IP addresses hosting your site: example. mysite. How to: Learn how to use Cloudflare DNS to manage your DNS records. You need to enter the following details: - Hostname: this should always and only be the name of the subdomain. Mar 18, 2024 · A lame delegation occurs when an NS record points to a name server ( configured in the authoritative-name-server field ) that does not answer authoritatively for the domain ( configured in the domain-name-field ). Reading Time: 5 min. A records for the sub-domain name servers. Delegation points are unique in the DNS in this respect. In BIND, you create an NS record that points to an A record: labs. 13. PTR record. two or more NS records. A DNS 'mail exchange' (MX) record directs email to a mail server. May 23, 2024 · Do a Reverse DNS Lookup. 50. However, DNS NS records are restricted as they only provide the name of a domain’s nameserver and not the domain’s IP address. -type=ns: View Name Server records. A DKIM record is really a DNS TXT ("text") record. Jun 7, 2024 · For details, see RFC 1034. The actual subzone delegation is done with NS records. Aug 23, 2022 · ns1. Example of a TXT record: DKIM Records. wisc. This is exactly the opposite of what an A record does. Dec 17, 2019 · Nameservers vs DNS Records. com: noam. By default, five NS records are automatically created for you on Linode’s DNS Manager, one for each of Linode’s name servers (ns1 A vulnerable server would cache the additional A-record (IP address) for ns. When a client queries for an IP address, it can find the IP address of their intended destination from an NS record via a DNS lookup. It is designed to find IP addresses and deliver extensive information on records such as A, MX, NS, SOA, and TXT. It involves a DNS record on the internet ( IN) and a type A record ( A ). The IPv6 addresses for this service are 2606:4700:4700::1111 and 2606:4700:4700::1001. As you see, it’s easy to get a remote domain dns record if you need it. g. com you configured the NS Entry (s) holding the Server responsible for that zone. Time to Live (TTL) Record attributes. delete - (Defaults to 30 minutes) Used when deleting the DNS NS Record. example domain. Querying A records # . The most common types of DNS records are: CNAME records, MX records, and TXT records. flags. Optional: Select the desired TTL(Time-To-Live). An MX record specifies the mail servers responsible for accepting email messages sent to a domain name. Delegated subzone. org and ns2. You can use the OldInputObject parameter to specify a resource record object that you want to change and NewInputObject to specify a new resource record. This cmdlet cannot change the Name or Type of a DNS server May 3, 2010 · Service Discovery can be easily introduced to systems of RESTful Web services by leveraging standard DNS mechanisms as specified by DNS-SD. MX and NS records cannot point to a CNAME record; they have to point to an A record (for IPv4) or an AAAA record (for IPv6). In the above example, we configured two backup name servers: ns2. ns1. update - (Defaults to 30 minutes) Used when updating the DNS NS Record. 244. 206 is bud02s33-in-f14. As an example of the difference between IPv4 and IPv6 addresses, Cloudflare offers a public DNS resolver that anyone can use by setting their device's DNS to 1. 1. Address ( A) records for the sub-domain name servers. 3600 is the TTL (time to live) of the record in seconds, this example represents 1 hour. These are the types of records you need to modify when you want to delegate a domain to a DNS provider. Alias record (Preview), which maps an alias domain name to a canonical name at the zone apex. Name. Like CNAME records, an MX record must always point to another domain. It holds the original and complete zone file, which contains all the DNS records for the domain. And you need to provide a pair of DNS name servers for your sub-domain. In order to have a valid DNS configuration, the NS records configured in the DNS zone must be exactly the same as those configured as name servers at your domain name provider. Dec 1, 2017 · Let’s go through my picks…. The TXT record was originally intended as a place for human-readable notes. (To answer how you can figure out the returned data) You can get the TXT, CNAME, and SOA records a similar way but you just have to get the correct attributes depending on the DNS response object. 这些记录存储了域名的相关信息，包括域名、目标 IP 地址和其他信息，如生存时间 (TTL)。. com dns. nslookup -type=mx theitbros. An “A” record lists the IP addresses for a web host. Create NS records for the subdomain. Some Internet protocols require the use of SRV records in order to function. com” are referred to the root domain (or DNS zone apex) “example. target. - Value: consists of four parts, separated by spaces. A DomainKeys Identified Mail (DKIM) record is a modified TXT record. states that binary. For Canonical name, enter the domain name, followed by a period (for example, example. The NS record looks fine, but the A record is wrong. One NS record set exists in the parent zone and one exists in the child zone at the same DNS name. This example displays the “A” records for the domain. Example 2: Add an A resource record under the Admin node PS C:\> Add-DnsServerResourceRecord -ZoneName "Contoso. NS records, or Name Server records, are used to delegate a subdomain to a set of name servers. domain. vc. Examples of data values include IPv4 addresses (in A records), IPv6 addresses (in AAAA records), and hostnames (in CNAME records). A host may have multiple name servers, and each register an alternative address location for its name server’s responsibility. another DNS server that serves that domain. org and has a identical copy on ns2. For example: www. Jul 26, 2014 · 1. However, this is just an example, let’s see the full list of type of dns records, and what are they useful to. NS records can be imported using the resource id, e. In this example, this domain has 3 MX records with priorities 10, 20 and 30 (the lower the number, the higher the MX priority). mydomain. Create a CNAME Entry vendor. Nameservers, on the other hand, help store and organize those individual DNS records. com and hit [enter] to get the NS records for example. Cloudflare Dashboard · Community · Learning Center · Support Portal · Cookie Settings. To display basic information about a domain, enter the nslookup command and the name of the domain. -type=mx: View Mail Exchange server information. org. These are the IPv4 addresses. NS Records. Proxy status. 206. Click Manage DNS Records. doit. While the best domain registrars will give more specific information, here are some of the most commonly used types of DNS records; 1. DS-records are used in connection with DNSSEC and allow you to delegate trust to another signing key used in a DNS subzone. In-depth details on common DNS record types. May 16, 2024 · Finding your DNS records. com subdomain to noamdc1. Types of DNS records. That way, resolvers will be redirected to the proper DNS servers, the same servers that are Mar 26, 2024 · In this example, the PTR record reveals that the IP address “192. DMARC Records. The DNS "service" (SRV) record specifies a host and port for specific services such as voice over IP (VoIP), instant messaging, and so on. com, and translate it to an IP address. NsRecord[] PTRRecords: The list of PTR records in the record set. It’s used like this: “redirect=exampledomain. SoaRecord: SRVRecords: The list of SRV records in the record set. Jun 13, 2023 · A client can store the record for 12,879 seconds (around three and a half hours) in the cache before the information must again be requested from the DNS server. A common example is the www subdomain which is provided as an alias to the root domain name - users accessing “www. 17. Value of 0: Record holds some other type of DNS public key and must not be used to verify RRSIGs that cover RRsets. _domainkey. A DNS zone must contain at least one NS record but you can have as many NS records as you would like for your domain name. A DKIM record stores the DKIM public key — a randomized string of characters that is used to verify anything signed with the private key. The process is called DNS zone transfer. In the Point to field, type the host name of the name server. Example 3: Check IP Address of a Domain. IPv6 address record, which maps host names to their IPv6 address. One domain can have many TXT records. To list all the DNS records in the domain zone, run the command: nslookup -type=any theitbros. Services. The dig command offers an option to look up a domain name by its IP address. dns-example. com using the DNS server 8. 206 IP address, type the following: dig -x 142. px01. It’s possible to operate a website with just an A Record, CNAME Record, and NS Record. Copy. IN NS ns1. 3600 IN A 192. Click Create. You can use these to direct part of your traffic to another DNS service or to delegate DNS administration for a subdomain. com NS ns1. com. 180. But since we are already on one of these servers, this appears do be duplicated information. com on internalDNS holding the information externaldns. 80. On externaldns. This means that when a record has had updates made to it, then it will take 1 hour to update. 168. If you omit the final step, adns1,2,3 will be unresolvable for ALL recursive nameservers. Used in reverse DNS lookups. com). , the following line was added to the zone abc. The various file types have different functions. DNS records are used to store information about a domain, such as its IP address or a list of mail servers. 100. -type=hinfo: View hardware-related information about the host. Click the zone name whose record set you want to delete. contoso. 1e100. 104. Apr 12, 2024 · DNS records help communicate information about your domain to visitors and other web services. 8 (for the geeks out there, you should instantly recognize Comodo DNS; Support; Account Login WebMail Live Chat Call 800-403-3568 Everything you need to grow your online presence. If the IP address of adns1,2,3 ever changes, it would need to be updated in the doit. IPv4 address. 1: DNS record lookup result. com 86400 IN NS ns1. 1” maps to the hostname “host. Click Delete record set. A PTR (pointer) record, also called a reverse DNS record, resolves an IP address to a domain name. org as the nameservers. NS Record (Nameserver Record) NS (Name Server) records play a pivotal role in directing DNS queries and resolving domain names to IP addresses. 5 days ago · In this example, the location selected is West US. example would be referred to (ie, retried with) mysite. Go to Cloud DNS. DNS records are what contain the actual information that other browsers or services need to interact with, like your server’s IP address. Feb 13, 2023 · The list of NS records in the record set. PTR record Nov 20, 2023 · Table of Contents. Here you will add the desired NS record, provided by your host. Address record, which maps host names to their IPv4 address. A private zone is any zone that cannot be queried over the public internet. In the Google Cloud console, go to the Cloud DNS page. TXT records can be used to store any text that a domain Apr 10, 2024 · In this example, the server the NS record ultimately points you to is the authoritative server. CNAME associates an alias with a canonical ("true") name. Oct 28, 2022 · NS ( Name Server) records specify the name servers used for a domain or subdomain. The A record is the most important DNS record type. Understanding the Basics. "I've no idea of the IP address of this name, but if you go ask that nameserver over there, it might An NS record (or nameserver record) is a DNS record that contains the name of the authoritative name server within a domain or DNS zone. 3600 IN A 104. Learn more about MX records or NS records. ns. and ns3. For more background about different types of DNS records, refer to the Learning Center . example would be an alias for canonical/true name mysite. 51. If in List view, click the 'vertical 3 dots' button to the right of your domain. To find your DNS records in the panel, navigate to the Manage Websites page and open the DNS Settings page: If in Grid view, click the 'vertical 3 dots' button under your domain. Example 6: Perform reverse DNS lookup. A Record This record is used to associate text with a domain. This means that your domain will use the same SPF as “exampledomain. Learn more about various DNS records. However, inside this file, there must also be 2 NS records which list ns1. Feb 14, 2024 · The NS records identify the name servers, responsible for your DNS zone. Within the zone file, in which case they are authoritative records for the zone's name servers. A name server or DNS server contains all of the DNS zone files and records Feb 1, 2022 · Name Server Record (NS) Defined in RFC 1035. A records are used to map a domain to an IP address, while CNAME records are Mar 15, 2021 · If you change hosting to somewhere other than where you registered your domain, you would need to update the NS records. binary. This is the address of the nameserver for this domain. In the example above, we left out one point for simplicity: DNS records. These are simple text files that bundle all records into a zone for which the relevant server is responsible. An NS record is a "name server" record and indicates which DNS server is authoritative for that domain. In our SOA record, we show which is the authoritative name server. Jun 7, 2024 · For example, you might create an A record in a public zone called example. Enter the subdomain in Host field blank. For example, if you pull the DNS records of cloudflare. The other NS record and/or its corresponding A record are missing. The DNS can quickly be updated with some propagation time, which is the length of time needed to update records across the Internet. com, and returns those name servers to the DNS resolver. A Canonical Name (CNAME) Record is used in the Domain Name System (DNS) to create an alias from one domain name to another domain name. Bit 7 Zone Key flag. com from Alibaba Cloud DNS to Tencent Cloud DNSPod, specify the following parameters to add an NS record: Mar 7, 2023 · Reference — DNS records. Which DNS server contains the actual DNS records, or is the DNS server responsible for managing the DNS records for that domain? Where to go to find the domain's IP address . DNS based service discovery is readily available to Oct 12, 2018 · Dig allows you to perform any valid DNS query by appending the record type to the end of the query. Edit on GitHub · Updated 1 year ago. example, and all DNS queries for dns. Example: example. 20 dig command examples in Linux (Cheat Sheet) Example 1: Check Dig Version. There are some DNS Entries you can create. We would like to show you a description here but the site won’t allow us. There are many different types of DNS records, each with its own purpose. The MX record indicates how email messages should be routed in accordance with the Simple Mail Transfer Protocol ( SMTP, the standard protocol for all email). uk 86400 IN NS ns1. ns2. DNS has many record types that each serve a distinct purpose To check the NS records for a certain domain name on Windows, follow these steps: Open a command prompt by navigating to Start → 'Type here to search' → 'cmd' → Open. info. ALIAS. 42. Hostname. Example of a SOA record merek. Reference: Check information about record types, status and additional options. In your actual deployment, both the Hostname and Host IP address should be changed to use the real names and addresses of your Conferencing Node s. A DNS TXT (“text”) record lets a domain administrator enter arbitrary text into the Domain Name System (DNS). create - (Defaults to 30 minutes) Used when creating the DNS NS Record. Example 4: Check A record of a domain. However, now it is also possible to put some machine-readable data into TXT records. NS record: This record is used to delegate a subzone to a set of name servers. Jan 5, 2024 · A/AAAA Records. RFC1034 contains a good description of how sub-domains are May 30, 2023 · DNS records are located in zone files. For example, the A record is used to translate from a domain name to an IPv4 address, the NS record lists which name servers can answer lookups on a DNS zone, and the MX record specifies the mail server used to handle mail for a domain specified in an e-mail address. 权威名称服务器是用于解决对主机名查询的服务器，并确定哪些IP地址应被用来访问一个特定的服务器。. Click Save. DNS records A sender policy framework (SPF) record is a type of DNS TXT record that lists all the servers authorized to send emails from a particular domain. Then, you would create a corresponding A, AAAA, or CNAME record for that subdomain ( blog, store ). A records only hold IPv4 addresses. example, allowing the attacker to resolve queries to the entire target. pg tt ry qt po tc an pd tp vf