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 facebook.com

Records: 18

Response Time: 107ms

DNSSEC: Disabled

DNS Provider: Unknown

Security: ✓ SPF soft ✓ DMARC reject

Address Records

IP addresses the domain points to

2 records

Type	Name	Value	TTL
A	facebook.com	57.144.174.1 🇮🇪 IE AS32934 FACEBOOK - Facebook, Inc., US	54s
AAAA	facebook.com	2a03:2880:f381:1:face:b00c:0:25de	13s

Mail Records

Mail servers for the domain

1 record

Type	Name	Value	TTL
MX	facebook.com	10 smtpin.vvv.facebook.com.	1h

Name Records

Nameservers and aliases

5 records

Type	Name	Value	TTL
NS	facebook.com	d.ns.facebook.com.	2d
NS	facebook.com	b.ns.facebook.com.	2d
NS	facebook.com	c.ns.facebook.com.	2d
NS	facebook.com	a.ns.facebook.com.	2d
SOA	facebook.com	a.ns.facebook.com. dns.facebook.com. 4207849484 14400 1800 604800 300	1h

Text & Verification

SPF, DKIM, DMARC, and verification

7 records

Type	Name	Value	TTL
TXT	_dmarc.facebook.com	"v=DMARC1; p=reject; rua=mailto:a@dmarc.facebookmail.com; ruf=mailto:fb-dmarc@datafeeds.phishlabs.com; pct=100"	1h
TXT	facebook.com	"google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s"	2h
TXT	facebook.com	"google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY"	2h
TXT	facebook.com	"zoom-domain-verification=4b2ef4e1-6dee-4483-9869-9bef353fd147"	1h
TXT	facebook.com	"v=spf1 redirect=_spf.facebook.com"	1d
TXT	facebook.com	"google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA"	2h
TXT	facebook.com	"facebook-domain-verification=y7isfmi3kzyg1r4wophh9vyb6pgbda"	1h

Service Discovery

Service endpoints and bindings

2 records

Type	Name	Value	TTL
HTTPS	facebook.com	\# 13 00 01 00 00 01 00 06 02 68 32 02 68 33	13m
HTTPS	facebook.com	\# 50 00 02 09 73 74 61 72 2d 6d 69 6e 69 08 66 61 6c 6c 62 61 63 6b 04 63 31 30 72 08 66 61 63 65 62 6f 6f 6b 03 63 6f 6d 00 00 01 00 06 02 68 32 02 68 33	13m

Security & Certificates

DNSSEC, CA restrictions, and keys

1 record

Type	Name	Value	TTL
CAA	facebook.com	\# 93 00 05 69 73 73 75 65 64 69 67 69 63 65 72 74 2e 63 6f 6d 3b 20 61 63 63 6f 75 6e 74 3d 32 37 31 62 30 62 65 64 61 30 37 37 31 64 30 30 36 61 61 33 61 36 63 31 31 62 30 35 31 38 37 64 34 35 36 64 36 63 32 33 39 62 34 36 63 62 35 32 34 31 31 39 36 30 39 35 62 30 39 63 39 32 61 66	1h

Queried at 5/10/2026, 9:30:59 PM

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=facebook.com

Response for facebook.com Live Data

{
  "success": true,
  "data": {
    "domain": "facebook.com",
    "queryTimeMs": 107,
    "dnssec": false,
    "dnsProvider": null,
    "records": [
      {
        "type": "A",
        "name": "facebook.com",
        "value": "57.144.174.1",
        "ttl": 54,
        "geo": {
          "ip": "57.144.174.1",
          "asn": 32934,
          "country": "IE",
          "asnName": "FACEBOOK - Facebook, Inc., US"
        }
      },
      {
        "type": "AAAA",
        "name": "facebook.com",
        "value": "2a03:2880:f381:1:face:b00c:0:25de",
        "ttl": 13,
        "geo": {
          "ip": "2a03:2880:f381:1:face:b00c:0:25de"
        }
      },
      {
        "type": "MX",
        "name": "facebook.com",
        "value": "10 smtpin.vvv.facebook.com.",
        "ttl": 3600
      },
      {
        "type": "NS",
        "name": "facebook.com",
        "value": "d.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "facebook.com",
        "value": "b.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "facebook.com",
        "value": "c.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "facebook.com",
        "value": "a.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "SOA",
        "name": "facebook.com",
        "value": "a.ns.facebook.com. dns.facebook.com. 4207849484 14400 1800 604800 300",
        "ttl": 3600
      },
      {
        "type": "TXT",
        "name": "_dmarc.facebook.com",
        "value": "\"v=DMARC1; p=reject; rua=mailto:a@dmarc.facebookmail.com; ruf=mailto:fb-dmarc@datafeeds.phishlabs.com; pct=100\"",
        "ttl": 3600
      },
      {
        "type": "TXT",
        "name": "facebook.com",
        "value": "\"google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s\"",
        "ttl": 7200
      },
      {
        "type": "TXT",
        "name": "facebook.com",
        "value": "\"google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY\"",
        "ttl": 7200
      },
      {
        "type": "TXT",
        "name": "facebook.com",
        "value": "\"zoom-domain-verification=4b2ef4e1-6dee-4483-9869-9bef353fd147\"",
        "ttl": 3600
      },
      {
        "type": "TXT",
        "name": "facebook.com",
        "value": "\"v=spf1 redirect=_spf.facebook.com\"",
        "ttl": 86400
      },
      {
        "type": "TXT",
        "name": "facebook.com",
        "value": "\"google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA\"",
        "ttl": 7200
      },
      {
        "type": "TXT",
        "name": "facebook.com",
        "value": "\"facebook-domain-verification=y7isfmi3kzyg1r4wophh9vyb6pgbda\"",
        "ttl": 3600
      },
      {
        "type": "HTTPS",
        "name": "facebook.com",
        "value": "\\# 13 00 01 00 00 01 00 06 02 68 32 02 68 33",
        "ttl": 833
      },
      {
        "type": "HTTPS",
        "name": "facebook.com",
        "value": "\\# 50 00 02 09 73 74 61 72 2d 6d 69 6e 69 08 66 61 6c 6c 62 61 63 6b 04 63 31 30 72 08 66 61 63 65 62 6f 6f 6b 03 63 6f 6d 00 00 01 00 06 02 68 32 02 68 33",
        "ttl": 833
      },
      {
        "type": "CAA",
        "name": "facebook.com",
        "value": "\\# 93 00 05 69 73 73 75 65 64 69 67 69 63 65 72 74 2e 63 6f 6d 3b 20 61 63 63 6f 75 6e 74 3d 32 37 31 62 30 62 65 64 61 30 37 37 31 64 30 30 36 61 61 33 61 36 63 31 31 62 30 35 31 38 37 64 34 35 36 64 36 63 32 33 39 62 34 36 63 62 35 32 34 31 31 39 36 30 39 35 62 30 39 63 39 32 61 66",
        "ttl": 3600
      }
    ],
    "queriedAt": "2026-05-10T21:30:59.769Z"
  }
}

Rate limit: 100 req/min

Authentication: API Key

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