DNS Lookup Tool

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

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DNS Records for fbcdn.net

Records: 13
Response Time: 54ms
DNSSEC: Disabled
DNS Provider: Unknown
Security: ✓ SPF soft ✓ DMARC none

Address Records

IP addresses the domain points to

2 records
Type Name Value TTL
A fbcdn.net
57.145.2.1
🇮🇪 IE AS32934 FACEBOOK - Facebook, Inc., US
1m
AAAA fbcdn.net
2a03:2880:f381:1:face:b00c:0:25de
 1m

Name Records

Nameservers and aliases

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

Text & Verification

SPF, DKIM, DMARC, and verification

3 records
Type Name Value TTL
TXT _dmarc.fbcdn.net
"v=DMARC1; p=none; sp=none; rua=mailto:a@dmarc.facebookmail.com"
 2h
TXT fbcdn.net
"v=spf1 a ~all"
 2h
TXT fbcdn.net
"google-site-verification=fK7K3F-hT-Pre47WNaVLRyk-_nC0Kc7K-IzagA5gPEw"
 2h

Service Discovery

Service endpoints and bindings

2 records
Type Name Value TTL
HTTPS fbcdn.net
\# 13 00 01 00 00 01 00 06 02 68 32 02 68 33
 13m
HTTPS fbcdn.net
\# 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 fbcdn.net
\# 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, 9:32:46 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=fbcdn.net
Response for fbcdn.net Live Data 
{
  "success": true,
  "data": {
    "domain": "fbcdn.net",
    "queryTimeMs": 54,
    "dnssec": false,
    "dnsProvider": null,
    "records": [
      {
        "type": "A",
        "name": "fbcdn.net",
        "value": "57.145.2.1",
        "ttl": 60,
        "geo": {
          "ip": "57.145.2.1",
          "asn": 32934,
          "country": "IE",
          "asnName": "FACEBOOK - Facebook, Inc., US"
        }
      },
      {
        "type": "AAAA",
        "name": "fbcdn.net",
        "value": "2a03:2880:f381:1:face:b00c:0:25de",
        "ttl": 60,
        "geo": {
          "ip": "2a03:2880:f381:1:face:b00c:0:25de"
        }
      },
      {
        "type": "NS",
        "name": "fbcdn.net",
        "value": "b.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "fbcdn.net",
        "value": "c.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "fbcdn.net",
        "value": "d.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "NS",
        "name": "fbcdn.net",
        "value": "a.ns.facebook.com.",
        "ttl": 172800
      },
      {
        "type": "SOA",
        "name": "fbcdn.net",
        "value": "a.ns.facebook.com. dns.facebook.com. 4207849484 14400 1800 604800 300",
        "ttl": 3600
      },
      {
        "type": "TXT",
        "name": "_dmarc.fbcdn.net",
        "value": "\"v=DMARC1; p=none; sp=none; rua=mailto:a@dmarc.facebookmail.com\"",
        "ttl": 7200
      },
      {
        "type": "TXT",
        "name": "fbcdn.net",
        "value": "\"v=spf1 a ~all\"",
        "ttl": 7200
      },
      {
        "type": "TXT",
        "name": "fbcdn.net",
        "value": "\"google-site-verification=fK7K3F-hT-Pre47WNaVLRyk-_nC0Kc7K-IzagA5gPEw\"",
        "ttl": 7200
      },
      {
        "type": "HTTPS",
        "name": "fbcdn.net",
        "value": "\\# 13 00 01 00 00 01 00 06 02 68 32 02 68 33",
        "ttl": 823
      },
      {
        "type": "HTTPS",
        "name": "fbcdn.net",
        "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": 823
      },
      {
        "type": "CAA",
        "name": "fbcdn.net",
        "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": "2026-05-10T21:32:46.527Z"
  }
}
Rate limit: 100 req/min
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