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 booking.com

Records: 63

Response Time: 40ms

DNSSEC: Disabled

DNS Provider:

AWS Route 53

Security: ✓ SPF strict ✓ DMARC reject

Address Records

IP addresses the domain points to

4 records

Type	Name	Value	TTL
A	booking.com	3.170.51.18 🇺🇸 US AS16509 AMAZON-02 - Amazon.com, Inc., US	1m
A	booking.com	3.170.51.87 🇺🇸 US AS16509 AMAZON-02 - Amazon.com, Inc., US	1m
A	booking.com	3.170.51.59 🇺🇸 US AS16509 AMAZON-02 - Amazon.com, Inc., US	1m
A	booking.com	3.170.51.119 🇺🇸 US AS16509 AMAZON-02 - Amazon.com, Inc., US	1m

Mail Records

Mail servers for the domain

2 records

Type	Name	Value	TTL
MX	booking.com	10 mxa-0032a201.gslb.pphosted.com.	15m
MX	booking.com	10 mxb-0032a201.gslb.pphosted.com.	15m

Name Records

Nameservers and aliases

5 records

Type	Name	Value	TTL
NS	booking.com	ns-1288.awsdns-33.org.	5m
NS	booking.com	ns-1959.awsdns-52.co.uk.	5m
NS	booking.com	ns-508.awsdns-63.com.	5m
NS	booking.com	ns-716.awsdns-25.net.	5m
SOA	booking.com	ns-1288.awsdns-33.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	15m

Text & Verification

SPF, DKIM, DMARC, and verification

52 records

Type	Name	Value	TTL
TXT	_dmarc.booking.com	"v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:booking@dmarc.postmastery.eu; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com"	15m
TXT	booking.com	"Dynatrace-site-verification=3a88fc1a-195c-455d-ab87-88d09191496b__drhtlct978bncn9utek6qdqapk"	15m
TXT	booking.com	"MS=ms35392088"	15m
TXT	booking.com	"MS=ms94636132"	15m
TXT	booking.com	"VkJHqtn1JPDHrgqwzb8C30fmoABFhxVfjIOtLvlUK06CUwKgd2mevDGtnDhWZcNbxEgK39DOezbHay8XSv1zVQ=="	15m
TXT	booking.com	"ZOOM_verify_rRPrFA9oTH2bxfFkJeQTzA"	15m
TXT	booking.com	"_14w4c7x8j3wh3rcjq506pc8tpni5e0j"	15m
TXT	booking.com	"_globalsign-domain-verification=9Xqu2bonefjuoUF-XmyjAptAfuE-yStJz6wy9UnH-C"	15m
TXT	booking.com	"_globalsign-domain-verification=FSlSaYMuHsffF-JRsSpJSonQOV0_jwrwl5kQGpFdtb"	15m
TXT	booking.com	"_globalsign-domain-verification=l_BNpBAnk-rKZRyXJ9UkBfv9o6EEuuenkBrGpYNYo0"	15m
TXT	booking.com	"_ngvwjw7ivb5mv4iz4ynfsao26826rul"	15m
TXT	booking.com	"_t33b2jwn9aya9tjjl23glp3pdv3puct"	15m
TXT	booking.com	"adobe-idp-site-verification=040db58f-cfb9-4203-a555-bfcd15b24b86"	15m
TXT	booking.com	"anthropic-domain-verification-3tn1j6=kp9CbC14s2pKcVhSOOlbHwQHz"	15m
TXT	booking.com	"apple-domain-verification=immERz8LzjEgeSoW"	15m
TXT	booking.com	"asv=93db973d8bc6fd37d0c9e0c3feebff95"	15m
TXT	booking.com	"atlassian-domain-verification=F3hugs/a4ZZHwjGTLmlb12IMA3TIRiz3ifqw4TKRz9tWk0LoyBBXfwc775aT/juy"	15m
TXT	booking.com	"atlassian-domain-verification=PEQekniknkTLbMzMw6Ifb9G9YWzhgcGHzIne34xYo7zW9/rzVsM/6qZSUWdIVAmR"	15m
TXT	booking.com	"atlassian-sending-domain-verification=e6842471-4159-4738-b15a-cefe813dc42a"	15m
TXT	booking.com	"canva-site-verification=KAuoIY0y5F95ChkJB52A2w"	15m
TXT	booking.com	"cisco-ci-domain-verification=45d8573a6620606f09d1556681408112c9f9754309b02423c380eee5d287bd8f"	15m
TXT	booking.com	"cursor-domain-verification-wv67f5=cvoPd4JZECcPi6V9VqDM7DpGz"	15m
TXT	booking.com	"docker-verification=0ebe0b8e-6bd1-4f94-b0b3-344bd07052ed"	15m
TXT	booking.com	"docusign=1ddc2bf3-a249-4127-a351-f22dc75077d3"	15m
TXT	booking.com	"ecostruxure-it-verification=881dfd3b-5776-4fc0-a5f6-190a0ac842f8"	15m
TXT	booking.com	"f3n3z6cw35fkl9lnb6q72dczy2z7d2gy"	15m
TXT	booking.com	"fastly-domain-delegation-0344411-343733-2021_0223"	15m
TXT	booking.com	"globalsign-domain-verification=jpcnVg6kuHYyEz5op6ZzxI2E53gePoVqca7RgL0aNq"	15m
TXT	booking.com	"google-site-verification=1eOMDGAH7nc_P5U-8MWPqSTU40og02u0CODDvbcmoMw"	15m
TXT	booking.com	"google-site-verification=IqETr3m1Iq2apdhg2tJndtOH5xn_C0PrLSBL4UpB9WU"	15m
TXT	booking.com	"google-site-verification=WMDRc5NQqj7RWff1N8L0_Ikc08kSr-iUa3C0Zczl9QA"	15m
TXT	booking.com	"google-site-verification=Yse39yHdmcUPiSTGNVY-eI27sV3TBfQVLBPHGWHiins"	15m
TXT	booking.com	"google-site-verification=_dm8lZJlohRuCXhYRFe8COWc0JNx7c6AVF1vWpP52nE"	15m
TXT	booking.com	"google-site-verification=qKQzyXjxHLM4q1X-7PdrurR3p1QjjINz2QD_MBvAmyU"	15m
TXT	booking.com	"google-site-verification=z4muhl35r1aT-msc5R269PO3RKaZHc7zzn6omxkiedI"	15m
TXT	booking.com	"gwt5v1xngwj1f6zq7khv3bp4xnxbgmkg"	15m
TXT	booking.com	"hpe-greenlake-domain-verification=34593547575036384f70456d357572467164437161596e387935596c35665041"	15m
TXT	booking.com	"intersight=f7b95d6ad5339839c1253d5e47c1c32ff8276909334ff7173890c54f4730e68a"	15m
TXT	booking.com	"jamf-site-verification=ginKrX1WfPAXLoSWwmiYoA"	15m
TXT	booking.com	"logmein-domain-confirmation 90DIFG9EEUT8U8R4895Y87H"	15m
TXT	booking.com	"mandrill_verify.e-l764xQVEGJ2x07f-WGHg"	15m
TXT	booking.com	"miro-verification=a08b425a7aa0b2b93256f4b504ee72afe8f9e0b9"	15m
TXT	booking.com	"mongodb-site-verification=Edb8EnML5i9pqy6z4N7La044KKs2z3iC"	15m
TXT	booking.com	"onetrust-domain-verification=3fce180bf9e54d5b97a7c9e1ce3cb10c"	15m
TXT	booking.com	"openai-domain-verification=dv-L58PjwMLqJ4qWsOGfKRPglPO"	15m
TXT	booking.com	"paloaltonetworks-site-verification=05d52539c7f02572db198a10ba1b238b6f4c6550c083c4bf41f4eb5e5101e47c"	15m
TXT	booking.com	"sending_domain1012722=80cff31442c5f4e1b9c51346939d5bf298d9eff5f69d465476631c95f588ac90"	15m
TXT	booking.com	"smartsheet-site-validation=zF2Qh0qhBS3O7AjSZMdaAVW2E7GB1VLL"	15m
TXT	booking.com	"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all"	15m
TXT	booking.com	"workplace-domain-verification=LsPqX88w148qQltQvOoT4ZTx6EO5Be"	15m
TXT	booking.com	"wrike-verification=NDM5MTUzODoyMTFkNjJmZWM5MDk5MTVjOWY2YTQ2MWI4MmVhNjRkZjBmNjg3NzhmZTJhZTQ2NjYxMmVlNjNmMDJkZWRkN2Vi"	15m
TXT	booking.com	"x9zcxt1dfyz6jj60w7smwl42tjzfv5yn"	15m

Queried at 5/12/2026, 8:56:08 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=booking.com

Response for booking.com Live Data

{
  "success": true,
  "data": {
    "domain": "booking.com",
    "queryTimeMs": 40,
    "dnssec": false,
    "dnsProvider": "AWS Route 53",
    "records": [
      {
        "type": "A",
        "name": "booking.com",
        "value": "3.170.51.18",
        "ttl": 60,
        "geo": {
          "ip": "3.170.51.18",
          "asn": 16509,
          "country": "US",
          "asnName": "AMAZON-02 - Amazon.com, Inc., US"
        }
      },
      {
        "type": "A",
        "name": "booking.com",
        "value": "3.170.51.87",
        "ttl": 60,
        "geo": {
          "ip": "3.170.51.87",
          "asn": 16509,
          "country": "US",
          "asnName": "AMAZON-02 - Amazon.com, Inc., US"
        }
      },
      {
        "type": "A",
        "name": "booking.com",
        "value": "3.170.51.59",
        "ttl": 60,
        "geo": {
          "ip": "3.170.51.59",
          "asn": 16509,
          "country": "US",
          "asnName": "AMAZON-02 - Amazon.com, Inc., US"
        }
      },
      {
        "type": "A",
        "name": "booking.com",
        "value": "3.170.51.119",
        "ttl": 60,
        "geo": {
          "ip": "3.170.51.119",
          "asn": 16509,
          "country": "US",
          "asnName": "AMAZON-02 - Amazon.com, Inc., US"
        }
      },
      {
        "type": "MX",
        "name": "booking.com",
        "value": "10 mxa-0032a201.gslb.pphosted.com.",
        "ttl": 900
      },
      {
        "type": "MX",
        "name": "booking.com",
        "value": "10 mxb-0032a201.gslb.pphosted.com.",
        "ttl": 900
      },
      {
        "type": "NS",
        "name": "booking.com",
        "value": "ns-1288.awsdns-33.org.",
        "ttl": 300
      },
      {
        "type": "NS",
        "name": "booking.com",
        "value": "ns-1959.awsdns-52.co.uk.",
        "ttl": 300
      },
      {
        "type": "NS",
        "name": "booking.com",
        "value": "ns-508.awsdns-63.com.",
        "ttl": 300
      },
      {
        "type": "NS",
        "name": "booking.com",
        "value": "ns-716.awsdns-25.net.",
        "ttl": 300
      },
      {
        "type": "SOA",
        "name": "booking.com",
        "value": "ns-1288.awsdns-33.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "_dmarc.booking.com",
        "value": "\"v=DMARC1; p=reject; rua=mailto:dmarc_rua@emaildefense.proofpoint.com,mailto:booking@dmarc.postmastery.eu; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"Dynatrace-site-verification=3a88fc1a-195c-455d-ab87-88d09191496b__drhtlct978bncn9utek6qdqapk\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"MS=ms35392088\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"MS=ms94636132\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"VkJHqtn1JPDHrgqwzb8C30fmoABFhxVfjIOtLvlUK06CUwKgd2mevDGtnDhWZcNbxEgK39DOezbHay8XSv1zVQ==\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"ZOOM_verify_rRPrFA9oTH2bxfFkJeQTzA\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"_14w4c7x8j3wh3rcjq506pc8tpni5e0j\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"_globalsign-domain-verification=9Xqu2bonefjuoUF-XmyjAptAfuE-yStJz6wy9UnH-C\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"_globalsign-domain-verification=FSlSaYMuHsffF-JRsSpJSonQOV0_jwrwl5kQGpFdtb\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"_globalsign-domain-verification=l_BNpBAnk-rKZRyXJ9UkBfv9o6EEuuenkBrGpYNYo0\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"_ngvwjw7ivb5mv4iz4ynfsao26826rul\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"_t33b2jwn9aya9tjjl23glp3pdv3puct\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"adobe-idp-site-verification=040db58f-cfb9-4203-a555-bfcd15b24b86\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"anthropic-domain-verification-3tn1j6=kp9CbC14s2pKcVhSOOlbHwQHz\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"apple-domain-verification=immERz8LzjEgeSoW\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"asv=93db973d8bc6fd37d0c9e0c3feebff95\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"atlassian-domain-verification=F3hugs/a4ZZHwjGTLmlb12IMA3TIRiz3ifqw4TKRz9tWk0LoyBBXfwc775aT/juy\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"atlassian-domain-verification=PEQekniknkTLbMzMw6Ifb9G9YWzhgcGHzIne34xYo7zW9/rzVsM/6qZSUWdIVAmR\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"atlassian-sending-domain-verification=e6842471-4159-4738-b15a-cefe813dc42a\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"canva-site-verification=KAuoIY0y5F95ChkJB52A2w\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"cisco-ci-domain-verification=45d8573a6620606f09d1556681408112c9f9754309b02423c380eee5d287bd8f\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"cursor-domain-verification-wv67f5=cvoPd4JZECcPi6V9VqDM7DpGz\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"docker-verification=0ebe0b8e-6bd1-4f94-b0b3-344bd07052ed\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"docusign=1ddc2bf3-a249-4127-a351-f22dc75077d3\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"ecostruxure-it-verification=881dfd3b-5776-4fc0-a5f6-190a0ac842f8\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"f3n3z6cw35fkl9lnb6q72dczy2z7d2gy\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"fastly-domain-delegation-0344411-343733-2021_0223\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"globalsign-domain-verification=jpcnVg6kuHYyEz5op6ZzxI2E53gePoVqca7RgL0aNq\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=1eOMDGAH7nc_P5U-8MWPqSTU40og02u0CODDvbcmoMw\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=IqETr3m1Iq2apdhg2tJndtOH5xn_C0PrLSBL4UpB9WU\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=WMDRc5NQqj7RWff1N8L0_Ikc08kSr-iUa3C0Zczl9QA\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=Yse39yHdmcUPiSTGNVY-eI27sV3TBfQVLBPHGWHiins\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=_dm8lZJlohRuCXhYRFe8COWc0JNx7c6AVF1vWpP52nE\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=qKQzyXjxHLM4q1X-7PdrurR3p1QjjINz2QD_MBvAmyU\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"google-site-verification=z4muhl35r1aT-msc5R269PO3RKaZHc7zzn6omxkiedI\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"gwt5v1xngwj1f6zq7khv3bp4xnxbgmkg\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"hpe-greenlake-domain-verification=34593547575036384f70456d357572467164437161596e387935596c35665041\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"intersight=f7b95d6ad5339839c1253d5e47c1c32ff8276909334ff7173890c54f4730e68a\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"jamf-site-verification=ginKrX1WfPAXLoSWwmiYoA\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"logmein-domain-confirmation 90DIFG9EEUT8U8R4895Y87H\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"mandrill_verify.e-l764xQVEGJ2x07f-WGHg\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"miro-verification=a08b425a7aa0b2b93256f4b504ee72afe8f9e0b9\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"mongodb-site-verification=Edb8EnML5i9pqy6z4N7La044KKs2z3iC\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"onetrust-domain-verification=3fce180bf9e54d5b97a7c9e1ce3cb10c\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
        "value": "\"openai-domain-verification=dv-L58PjwMLqJ4qWsOGfKRPglPO\"",
        "ttl": 900
      },
      {
        "type": "TXT",
        "name": "booking.com",
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    "queriedAt": "2026-05-12T08:56:08.894Z"
  }
}

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