DNS Lookup Tool

Query comprehensive DNS records for any domain. Get A, AAAA, MX, TXT, NS, CAA, SRV, DNSKEY and more.

Try:

RequestGuard

DNS Records for docker.com

Records: 52

Response Time: 44ms

DNSSEC: Disabled

DNS Provider:

AWS Route 53

Security: ✓ SPF strict ✓ DMARC quarantine

Address Records

IP addresses the domain points to

3 records

Type	Name	Value	TTL
A	docker.com	23.185.0.4 🇺🇸 US AS54113 FASTLY - Fastly, Inc., US	5m
AAAA	docker.com	2620:12a:8001::4	5m
AAAA	docker.com	2620:12a:8000::4	5m

Mail Records

Mail servers for the domain

5 records

Type	Name	Value	TTL
MX	docker.com	1 aspmx.l.google.com.	1h
MX	docker.com	10 alt3.aspmx.l.google.com.	1h
MX	docker.com	10 alt4.aspmx.l.google.com.	1h
MX	docker.com	5 alt1.aspmx.l.google.com.	1h
MX	docker.com	5 alt2.aspmx.l.google.com.	1h

Name Records

Nameservers and aliases

5 records

Type	Name	Value	TTL
NS	docker.com	ns-1289.awsdns-33.org.	2d
NS	docker.com	ns-1981.awsdns-55.co.uk.	2d
NS	docker.com	ns-207.awsdns-25.com.	2d
NS	docker.com	ns-568.awsdns-07.net.	2d
SOA	docker.com	ns-207.awsdns-25.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	15m

Text & Verification

SPF, DKIM, DMARC, and verification

32 records

Type	Name	Value	TTL
TXT	_dmarc.docker.com	"v=DMARC1; p=quarantine; pct=100; rua=mailto:q1xwnepx@ag.dmarcian.com; ruf=mailto:q1xwnepx@fr.dmarcian.com;"	5m
TXT	docker.com	"MS=ms42223923"	5m
TXT	docker.com	"MS=ms98031138"	5m
TXT	docker.com	"adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791f699d128bbe6ec2"	5m
TXT	docker.com	"airtable-verification=7f122efe7db6b16848108e469042c39c"	5m
TXT	docker.com	"anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3"	5m
TXT	docker.com	"apple-domain-verification=S580UenDqcwy2I1X"	5m
TXT	docker.com	"astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn"	5m
TXT	docker.com	"atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+x3kyqxZRrl9z7ILEK"	5m
TXT	docker.com	"cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd"	5m
TXT	docker.com	"d0vcwvtyam"	5m
TXT	docker.com	"detectify-verification=87a64c3bf3301354588d90672bd1b74e"	5m
TXT	docker.com	"docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31"	5m
TXT	docker.com	"docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8"	5m
TXT	docker.com	"google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s"	5m
TXT	docker.com	"google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M"	5m
TXT	docker.com	"google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM"	5m
TXT	docker.com	"google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0"	5m
TXT	docker.com	"google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M"	5m
TXT	docker.com	"google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08"	5m
TXT	docker.com	"google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I"	5m
TXT	docker.com	"google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg"	5m
TXT	docker.com	"jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ"	5m
TXT	docker.com	"miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f"	5m
TXT	docker.com	"onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1"	5m
TXT	docker.com	"openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju"	5m
TXT	docker.com	"opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46"	5m
TXT	docker.com	"sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be"	5m
TXT	docker.com	"sonatype-domain-verification=OSSRH-62474"	5m
TXT	docker.com	"stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e74486ab4"	5m
TXT	docker.com	"v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.zendesk.com -all"	5m
TXT	docker.com	"zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06"	5m

Security & Certificates

DNSSEC, CA restrictions, and keys

7 records

Type	Name	Value	TTL
CAA	docker.com	\# 40 00 05 69 6f 64 65 66 6d 61 69 6c 74 6f 3a 69 6e 66 72 61 2b 63 61 61 2d 69 6f 64 65 66 40 64 6f 63 6b 65 72 2e 63 6f 6d	5m
CAA	docker.com	\# 17 00 05 69 73 73 75 65 61 6d 61 7a 6f 6e 2e 63 6f 6d	5m
CAA	docker.com	\# 19 00 05 69 73 73 75 65 63 6f 6d 6f 64 6f 63 61 2e 63 6f 6d	5m
CAA	docker.com	\# 19 00 05 69 73 73 75 65 64 69 67 69 63 65 72 74 2e 63 6f 6d	5m
CAA	docker.com	\# 22 00 05 69 73 73 75 65 6c 65 74 73 65 6e 63 72 79 70 74 2e 6f 72 67	5m
CAA	docker.com	\# 15 00 05 69 73 73 75 65 70 6b 69 2e 67 6f 6f 67	5m
CAA	docker.com	\# 18 00 05 69 73 73 75 65 73 65 63 74 69 67 6f 2e 63 6f 6d	5m

Queried at 5/12/2026, 8:52:52 AM

About DNS Records

The Domain Name System (DNS) is the internet's phonebook, translating human-readable domain names into IP addresses. DNS records contain essential configuration for how a domain behaves across email, web, security, and services.

Common Records

A/AAAA - Map domain to IPv4/IPv6 addresses
MX - Mail servers for receiving email
TXT - SPF, DKIM, DMARC for email security
NS - Authoritative nameservers
CNAME - Aliases pointing to other domains

Security Records

CAA - Restrict which CAs can issue certificates
DNSKEY/DS - DNSSEC cryptographic keys
TLSA - DANE TLS certificate authentication
SSHFP - SSH host key fingerprints
SRV - Service discovery and endpoints

REST API

Integrate DNS lookups into your applications with our REST API. Query all record types programmatically.

GET DNS Lookup

$ curl https://api.requestguard.com/v1/dns/lookup?domain=docker.com

Response for docker.com Live Data

{
  "success": true,
  "data": {
    "domain": "docker.com",
    "queryTimeMs": 44,
    "dnssec": false,
    "dnsProvider": "AWS Route 53",
    "records": [
      {
        "type": "A",
        "name": "docker.com",
        "value": "23.185.0.4",
        "ttl": 300,
        "geo": {
          "ip": "23.185.0.4",
          "asn": 54113,
          "country": "US",
          "asnName": "FASTLY - Fastly, Inc., US"
        }
      },
      {
        "type": "AAAA",
        "name": "docker.com",
        "value": "2620:12a:8001::4",
        "ttl": 300,
        "geo": {
          "ip": "2620:12a:8001::4"
        }
      },
      {
        "type": "AAAA",
        "name": "docker.com",
        "value": "2620:12a:8000::4",
        "ttl": 300,
        "geo": {
          "ip": "2620:12a:8000::4"
        }
      },
      {
        "type": "MX",
        "name": "docker.com",
        "value": "1 aspmx.l.google.com.",
        "ttl": 3600
      },
      {
        "type": "MX",
        "name": "docker.com",
        "value": "10 alt3.aspmx.l.google.com.",
        "ttl": 3600
      },
      {
        "type": "MX",
        "name": "docker.com",
        "value": "10 alt4.aspmx.l.google.com.",
        "ttl": 3600
      },
      {
        "type": "MX",
        "name": "docker.com",
        "value": "5 alt1.aspmx.l.google.com.",
        "ttl": 3600
      },
      {
        "type": "MX",
        "name": "docker.com",
        "value": "5 alt2.aspmx.l.google.com.",
        "ttl": 3600
      },
      {
        "type": "NS",
        "name": "docker.com",
        "value": "ns-1289.awsdns-33.org.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "docker.com",
        "value": "ns-1981.awsdns-55.co.uk.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "docker.com",
        "value": "ns-207.awsdns-25.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "docker.com",
        "value": "ns-568.awsdns-07.net.",
        "ttl": 172800
      },
      {
        "type": "SOA",
        "name": "docker.com",
        "value": "ns-207.awsdns-25.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "_dmarc.docker.com",
        "value": "\"v=DMARC1; p=quarantine; pct=100; rua=mailto:q1xwnepx@ag.dmarcian.com; ruf=mailto:q1xwnepx@fr.dmarcian.com;\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"MS=ms42223923\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"MS=ms98031138\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791f699d128bbe6ec2\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"airtable-verification=7f122efe7db6b16848108e469042c39c\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"apple-domain-verification=S580UenDqcwy2I1X\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+x3kyqxZRrl9z7ILEK\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"d0vcwvtyam\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"detectify-verification=87a64c3bf3301354588d90672bd1b74e\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"sonatype-domain-verification=OSSRH-62474\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e74486ab4\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.zendesk.com -all\"",
        "ttl": 300
      },
      {
        "type": "TXT",
        "name": "docker.com",
        "value": "\"zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06\"",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 40 00 05 69 6f 64 65 66 6d 61 69 6c 74 6f 3a 69 6e 66 72 61 2b 63 61 61 2d 69 6f 64 65 66 40 64 6f 63 6b 65 72 2e 63 6f 6d",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 17 00 05 69 73 73 75 65 61 6d 61 7a 6f 6e 2e 63 6f 6d",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 19 00 05 69 73 73 75 65 63 6f 6d 6f 64 6f 63 61 2e 63 6f 6d",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 19 00 05 69 73 73 75 65 64 69 67 69 63 65 72 74 2e 63 6f 6d",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 22 00 05 69 73 73 75 65 6c 65 74 73 65 6e 63 72 79 70 74 2e 6f 72 67",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 15 00 05 69 73 73 75 65 70 6b 69 2e 67 6f 6f 67",
        "ttl": 300
      },
      {
        "type": "CAA",
        "name": "docker.com",
        "value": "\\# 18 00 05 69 73 73 75 65 73 65 63 74 69 67 6f 2e 63 6f 6d",
        "ttl": 300
      }
    ],
    "queriedAt": "2026-05-12T08:52:52.800Z"
  }
}

Rate limit: 100 req/min

Authentication: API Key

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