`dlb.booking.com`

DNSSEC	⚠️ Not signed
NS	`ns-1312.awsdns-36.org` ⭐
		A	2600:9000:5305:2000::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1312.awsdns-36.org`
		A	205.251.197.32^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1312.awsdns-36.org`
NS	`ns-1729.awsdns-24.co.uk`
		A	2600:9000:5306:c100::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1729.awsdns-24.co.uk`
		A	205.251.198.193^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1729.awsdns-24.co.uk`
NS	`ns-327.awsdns-40.com`
		A	2600:9000:5301:4700::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-327.awsdns-40.com`
		A	205.251.193.71^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-327.awsdns-40.com`
NS	`ns-645.awsdns-16.net`
		A	2600:9000:5302:8500::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-645.awsdns-16.net`
		A	205.251.194.133^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ip-205-251-194-133.defastlink.net`
SOA	`ns-1312.awsdns-36.org`awsdns-hostmaster@amazon.com serial=1

`booking.com`

	DNSSEC	⚠️ Not signed
	A	3.170.42.19^{🇺🇸 Amazon3.170.40.0/22}
	A	3.170.42.86^{🇺🇸 Amazon3.170.40.0/22}
	A	3.170.42.87^{🇺🇸 Amazon3.170.40.0/22}
	A	3.170.42.127^{🇺🇸 Amazon3.170.40.0/22}
	NS	`ns-1288.awsdns-33.org` ⭐
	NS	`ns-1959.awsdns-52.co.uk`
	NS	`ns-508.awsdns-63.com`
	NS	`ns-716.awsdns-25.net`
	MX	`mxa-0032a201.gslb.pphosted.com` ⭐
	MX	`mxb-0032a201.gslb.pphosted.com` ⭐
	TXT	`Dynatrace-site-verification=3a88fc1a-195c-455d-ab87-88d09191496b__drhtlct978b...`
	TXT	`MS=ms35392088`
	TXT	`MS=ms94636132`
	TXT	`VkJHqtn1JPDHrgqwzb8C30fmoABFhxVfjIOtLvlUK06CUwKgd2mevDGtnDhWZcNbxEgK39DOezbHa...`
	TXT	`ZOOM_verify_rRPrFA9oTH2bxfFkJeQTzA`
	TXT	`_14w4c7x8j3wh3rcjq506pc8tpni5e0j`
	TXT	`_globalsign-domain-verification=9Xqu2bonefjuoUF-XmyjAptAfuE-yStJz6wy9UnH-C`
	TXT	`_globalsign-domain-verification=FSlSaYMuHsffF-JRsSpJSonQOV0_jwrwl5kQGpFdtb`
	TXT	`_globalsign-domain-verification=l_BNpBAnk-rKZRyXJ9UkBfv9o6EEuuenkBrGpYNYo0`
	TXT	`_ngvwjw7ivb5mv4iz4ynfsao26826rul`
	TXT	`_t33b2jwn9aya9tjjl23glp3pdv3puct`
	TXT	`adobe-idp-site-verification=040db58f-cfb9-4203-a555-bfcd15b24b86`
	TXT	`anthropic-domain-verification-3tn1j6=kp9CbC14s2pKcVhSOOlbHwQHz`
	TXT	`apple-domain-verification=immERz8LzjEgeSoW`
	TXT	`asv=93db973d8bc6fd37d0c9e0c3feebff95`
	TXT	`atlassian-domain-verification=F3hugs/a4ZZHwjGTLmlb12IMA3TIRiz3ifqw4TKRz9tWk0L...`
	TXT	`atlassian-domain-verification=PEQekniknkTLbMzMw6Ifb9G9YWzhgcGHzIne34xYo7zW9/r...`
	TXT	`atlassian-sending-domain-verification=e6842471-4159-4738-b15a-cefe813dc42a`
	TXT	`canva-site-verification=KAuoIY0y5F95ChkJB52A2w`
	TXT	`cisco-ci-domain-verification=45d8573a6620606f09d1556681408112c9f9754309b02423...`
	TXT	`cursor-domain-verification-wv67f5=cvoPd4JZECcPi6V9VqDM7DpGz`
	TXT	`docker-verification=0ebe0b8e-6bd1-4f94-b0b3-344bd07052ed`
	TXT	`docusign=1ddc2bf3-a249-4127-a351-f22dc75077d3`
	TXT	`ecostruxure-it-verification=881dfd3b-5776-4fc0-a5f6-190a0ac842f8`
	TXT	`f3n3z6cw35fkl9lnb6q72dczy2z7d2gy`
	TXT	`fastly-domain-delegation-0344411-343733-2021_0223`
	TXT	`globalsign-domain-verification=jpcnVg6kuHYyEz5op6ZzxI2E53gePoVqca7RgL0aNq`
	TXT	`google-site-verification=1eOMDGAH7nc_P5U-8MWPqSTU40og02u0CODDvbcmoMw`
	TXT	`google-site-verification=IqETr3m1Iq2apdhg2tJndtOH5xn_C0PrLSBL4UpB9WU`
	TXT	`google-site-verification=WMDRc5NQqj7RWff1N8L0_Ikc08kSr-iUa3C0Zczl9QA`
	TXT	`google-site-verification=Yse39yHdmcUPiSTGNVY-eI27sV3TBfQVLBPHGWHiins`
	TXT	`google-site-verification=_dm8lZJlohRuCXhYRFe8COWc0JNx7c6AVF1vWpP52nE`
	TXT	`google-site-verification=qKQzyXjxHLM4q1X-7PdrurR3p1QjjINz2QD_MBvAmyU`
	TXT	`google-site-verification=z4muhl35r1aT-msc5R269PO3RKaZHc7zzn6omxkiedI`
	TXT	`gwt5v1xngwj1f6zq7khv3bp4xnxbgmkg`
	TXT	`hpe-greenlake-domain-verification=34593547575036384f70456d3575724671644371615...`
	TXT	`intersight=f7b95d6ad5339839c1253d5e47c1c32ff8276909334ff7173890c54f4730e68a`
	TXT	`jamf-site-verification=ginKrX1WfPAXLoSWwmiYoA`
	TXT	`logmein-domain-confirmation 90DIFG9EEUT8U8R4895Y87H`
	TXT	`mandrill_verify.e-l764xQVEGJ2x07f-WGHg`
	TXT	`miro-verification=a08b425a7aa0b2b93256f4b504ee72afe8f9e0b9`
	TXT	`mongodb-site-verification=Edb8EnML5i9pqy6z4N7La044KKs2z3iC`
	TXT	`onetrust-domain-verification=3fce180bf9e54d5b97a7c9e1ce3cb10c`
	TXT	`openai-domain-verification=dv-L58PjwMLqJ4qWsOGfKRPglPO`
	TXT	`paloaltonetworks-site-verification=05d52539c7f02572db198a10ba1b238b6f4c6550c0...`
	TXT	`sending_domain1012722=80cff31442c5f4e1b9c51346939d5bf298d9eff5f69d465476631c9...`
	TXT	`smartsheet-site-validation=zF2Qh0qhBS3O7AjSZMdaAVW2E7GB1VLL`
	TXT	`v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com -all`
	TXT	`workplace-domain-verification=LsPqX88w148qQltQvOoT4ZTx6EO5Be`
	TXT	`wrike-verification=NDM5MTUzODoyMTFkNjJmZWM5MDk5MTVjOWY2YTQ2MWI4MmVhNjRkZjBmNj...`
	TXT	`x9zcxt1dfyz6jj60w7smwl42tjzfv5yn`
	SOA	`ns-1288.awsdns-33.org`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (91/100)
rank #221 globally
rank #141 in the tld
This domain name "booking.com" is used by a popular travel agency that provides services related to lodging reservations. It's primarily known for booking hotel rooms and other accommodations worldwide. The website also offers services for booking flights, car rentals, and airport taxis.🔒 HSTS Preload (+subdomains)
WOT: SAFE (91/100)
📈 Tranco rank: #300

Overview

Booking.com is the world's leading online travel agency, headquartered in Amsterdam, Netherlands. Founded in 1996, it operates as the flagship brand of Booking Holdings Inc. (NASDAQ: BKNG), serving travelers in over 220 countries and territories. The platform offers accommodations ranging from hotels and resorts to vacation rentals, apartments, and unique stays—with over 31 million listings worldwide.

Services

Accommodation Booking: Hotels, hostels, apartments, villas, and unique properties
Flight & Car Rentals: Integrated travel booking beyond lodging
Booking.com for Business: Corporate travel management solutions
Genius Loyalty Program: Tiered rewards system with discounts and perks
Travel Experiences: Activities and attractions at destinations

In 2024, Booking Holdings processed $166 billion in gross travel bookings and 1.1 billion room nights, employing over 24,000 people across 140+ nationalities.

Technical Infrastructure

Component	Provider
Nameservers	AWS Route 53 (ns-508, ns-716, ns-1288, ns-1959)
Web Hosting	Amazon CloudFront (18.154.144.x range)
Email Security	Proofpoint (mxa/mxb-0032a201.gslb.pphosted.com)
DNSSEC	Not enabled

The domain ranks #228 globally and #145 among .com domains by traffic.

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DNS History

4 records (4 active, 0 former)

●NSns-1312.awsdns-36.org2026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 10:05:36
● 2026-03-28 10:49:00

●NSns-1729.awsdns-24.co.uk2026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 10:05:36
● 2026-03-28 10:49:00

●NSns-327.awsdns-40.com2026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 10:05:36
● 2026-03-28 10:49:00

●NSns-645.awsdns-16.net2026-03-27 → 2026-03-28 · 2 obs

● 2026-03-27 10:05:36
● 2026-03-28 10:49:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, c.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net...	-
booking.com	ns-716.awsdns-25.net, ns-508.awsdns-63.com, ns-1288.awsdns-33.org, ns-1959.awsdns-52.co.uk	1 record
dlb.booking.com	ns-1312.awsdns-36.org, ns-1729.awsdns-24.co.uk, ns-327.awsdns-40.com, ns-645.awsdns-16.net	-

✅ Authoritative Response

Server:205.251.197.32

NS records: ns-1312.awsdns-36.org, ns-1729.awsdns-24.co.uk, ns-327.awsdns-40.com, ns-645.awsdns-16.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for booking.com (unsigned zone)

⏱️ Timing

Total: 2387ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns-1312.awsdns-36.org, ns-1729.awsdns-24.co.uk...`
SOA	1	`ns-1312.awsdns-36.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-508.awsdns-63.com)

Analysis

Name Servers

dlb.booking.com delegates to four name servers: ns-327.awsdns-40.com, ns-645.awsdns-16.net, ns-1312.awsdns-36.org and ns-1729.awsdns-24.co.uk.

dlb.booking.com at least partially shares name servers with other domains, including gurnetpointcapital.com, rocketproinsight.com, isafedirect.com, d175v0h8oloizu.cloudfront.net and 1cf9ea8ea05d.j.cloudfront.hls.ttvnw.net.

These name servers are commonly used with ns-706.awsdns-24.net, ns-219.awsdns-27.com and ns-1682.awsdns-18.co.uk.

Host names with two IP numbers: ns-327.awsdns-40.com points to 2600:9000:5301:4700::1 and 205.251.193.71; ns-645.awsdns-16.net points to 2600:9000:5302:8500::1 and 205.251.194.133; ns-1312.awsdns-36.org points to 2600:9000:5305:2000::1 and 205.251.197.32; ns-1729.awsdns-24.co.uk points to 2600:9000:5306:c100::1 and 205.251.198.193.

dlb.booking.com - robtex.com

dlb.booking.com

booking.com

Overview

Services

Technical Infrastructure

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Name Servers

`dlb.booking.com`

`booking.com`