testbook.com - dns.ninja

`testbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:10::6814:11c7^{🇺🇸 Cloudflare2606:4700:10::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:10::ac42:91b2^{🇺🇸 Cloudflare2606:4700:10::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.20.17.199^{Cloudflare104.20.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.66.145.178^{🇺🇸 Cloudflare172.66.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`albert.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b3a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`albert.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c13a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`albert.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:213a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`albert.ns.cloudflare.com`
		A	108.162.193.58^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`albert.ns.cloudflare.com`
		A	172.64.33.58^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`albert.ns.cloudflare.com`
		A	173.245.59.58^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`albert.ns.cloudflare.com`
NS	`rafe.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ad8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rafe.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rafe.ns.cloudflare.com`
		A	108.162.192.216^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
		A	172.64.32.216^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
		A	173.245.58.216^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rafe.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c1d::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ww-in-f26.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽³⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽³⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`MS=D2D1943495DE25F9AB4B9F552606800901B83DA9`
TXT	`ahrefs-site-verification_034d9652594c6ec96236436a21227bb9e180fbdb3845f0324393...`
TXT	`facebook-domain-verification=7hg9055adtaoumm931vl3fuiwswnli`
TXT	`google-amphtml-update-api-key=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA11E...`
TXT	`google-site-verification=62PQnRGRpWD8Ryz6xthPy-xE6HqU5iilUxTrrNNzsUA`
TXT	`google-site-verification=8Ix3qDZhRnke2ZBaluVY5F2E6-gK-UenzvnBEn7n1G4`
TXT	`google-site-verification=BJjkxiU_LRRmYKvqiRemN5l7mpjWsZgMbG7WzRWf4Cs`
TXT	`google-site-verification=GQUcD9leXR2n9K8p7MTn0phlKudO7N3IkYA3ZR_3hgM`
TXT	`google-site-verification=HZUcUWKbiKEhFeBykG2DX5jtIG8nbxo8iWB9c3Wzc6Y`
TXT	`google-site-verification=MbBxqmOix5Nsqz08KWceNNt5uOKoJK-Z8HicD5GzGcU`
TXT	`google-site-verification=WHABehekZZpqxDhI-yYpOQeGAG7alqIFH1teuMOqKrE`
TXT	`google-site-verification=_kmwwe-m1zaowK8JigEAZD63oD9I4tchHrbtvkkCLps`
TXT	`google-site-verification=bZfL2FttTmFpL__WKO1zoT4hCGjJnhYk7Lswwpre2As`
TXT	`google-site-verification=xrodwTX05C8GMu1gK5XukTCrocpazmfRqll29Tw65Mo`
TXT	`openai-domain-verification=dv-tDtUlOwHnwYAf2C3Ahlnz2pf`
TXT	`v=spf1 include:_spf.mlsend.com include:amazonses.com include:_spf.google.com ...`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.20.17.199, 172.66.145.178
		IPv6 hints	2606:4700:10::6814:11c7, 2606:4700:10::ac42:91b2
SOA	`albert.ns.cloudflare.com`dns@cloudflare.com serial=2408592738

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1783161261

rank #22443 globally
rank #11047 in the tld
WOT: SAFE (70/100)
📈 Tranco rank: #1,510

Subdomains

cdn.testbook.com

apiocrm.testbook.com

api-new.testbook.com

services.testbook.com

ocrm.testbook.com

mpscrajyaseva2027.testbook.com

admin.testbook.com

email.testbook.com

tracker.testbook.com

blog-dev.testbook.com

ugcnet.testbook.com

drm-dev.testbook.com

angular.testbook.com

chatcdn.testbook.com

blog-prod.testbook.com

alphaservices.testbook.com

tech.testbook.com

api.testbook.com

lms.testbook.com

link.testbook.com

data.testbook.com

jarvis.testbook.com

books.testbook.com

myot-beta.testbook.com

blog_media.testbook.com

www.testbook.com

tpl.testbook.com

blogmedia.testbook.com

affiliate.testbook.com

mpscrajyasevagsp.testbook.com

blog-alpha.testbook.com

helpdesk.testbook.com

Same first word

testbook.az

testbook.de

testbook.org

testbook.es

testbook.co

testbook.mobi

testbook.ru

testbook.co.in

testbook.tv

testbook.com

Similar names

tekboost.com

tekboost.biz

tekboost.net

stokebot.com

tetbooks.com

booktest.com.tw

tokobest.com

booktest.ca

boosttek.com

tekboost.org

DNS History

21 records (11 active, 10 former)

●NSalbert.ns.cloudflare.com2017-08-13 → 2026-07-04 · 3 obs

○ 2017-08-03 15:01:22
● 2017-08-13 20:21:52
● 2026-07-04 10:37:20

○NSns-cloud-b1.googledomains.com2015-06-05 → 2017-08-03 · 4 obs

● 2015-06-05 06:36:28
● 2017-08-03 15:01:22
○ 2017-08-13 20:21:52
○ 2026-07-04 10:37:20

○NSns-cloud-b2.googledomains.com2015-06-05 → 2017-08-03 · 4 obs

● 2015-06-05 06:36:28
● 2017-08-03 15:01:22
○ 2017-08-13 20:21:52
○ 2026-07-04 10:37:20

○NSns-cloud-b3.googledomains.com2015-06-05 → 2017-08-03 · 4 obs

● 2015-06-05 06:36:28
● 2017-08-03 15:01:22
○ 2017-08-13 20:21:52
○ 2026-07-04 10:37:20

○NSns-cloud-b4.googledomains.com2015-06-05 → 2017-08-03 · 4 obs

● 2015-06-05 06:36:28
● 2017-08-03 15:01:22
○ 2017-08-13 20:21:52
○ 2026-07-04 10:37:20

●NSrafe.ns.cloudflare.com2017-08-13 → 2026-07-04 · 3 obs

○ 2017-08-03 15:01:22
● 2017-08-13 20:21:52
● 2026-07-04 10:37:20

●MXalt1.aspmx.l.google.com2015-06-05 → 2026-07-04 · 2 obs

● 2015-06-05 06:36:28
● 2026-07-04 10:37:20

●MXalt2.aspmx.l.google.com2015-06-05 → 2026-07-04 · 2 obs

● 2015-06-05 06:36:28
● 2026-07-04 10:37:20

●MXalt3.aspmx.l.google.com2015-06-05 → 2026-07-04 · 2 obs

● 2015-06-05 06:36:28
● 2026-07-04 10:37:20

●MXalt4.aspmx.l.google.com2015-06-05 → 2026-07-04 · 2 obs

● 2015-06-05 06:36:28
● 2026-07-04 10:37:20

●MXaspmx.l.google.com2015-06-05 → 2026-07-04 · 2 obs

● 2015-06-05 06:36:28
● 2026-07-04 10:37:20

○A104.155.193.2132015-06-05 → 2016-06-14 · 4 obs

● 2015-06-05 06:36:28
● 2016-06-14 06:35:20
○ 2016-12-08 14:29:42
○ 2026-07-04 10:37:20

●A104.20.17.1992026-02-15 → 2026-07-04 · 3 obs

○ 2017-10-06 14:48:48
● 2026-02-15 05:27:16
● 2026-07-04 10:37:20

○A104.25.31.452017-08-13 → 2017-10-06 · 5 obs

○ 2017-08-03 15:01:22
● 2017-08-13 20:21:52
● 2017-10-06 14:48:48
○ 2026-02-15 05:27:16
○ 2026-07-04 10:37:20

○A104.25.32.452017-08-13 → 2017-10-06 · 5 obs

○ 2017-08-03 15:01:22
● 2017-08-13 20:21:52
● 2017-10-06 14:48:48
○ 2026-02-15 05:27:16
○ 2026-07-04 10:37:20

○A130.211.42.1882016-12-08 → 2017-08-03 · 5 obs

○ 2016-06-14 06:35:20
● 2016-12-08 14:29:42
● 2017-08-03 15:01:22
○ 2017-08-13 20:21:52
○ 2026-07-04 10:37:20

●A172.66.145.1782026-02-15 → 2026-07-04 · 3 obs

○ 2017-10-06 14:48:48
● 2026-02-15 05:27:16
● 2026-07-04 10:37:20

○A2400:cb00:2048:1::6819:1f2d2017-08-13 → 2017-10-06 · 5 obs

○ 2017-08-03 15:01:22
● 2017-08-13 20:21:52
● 2017-10-06 14:48:48
○ 2026-02-15 05:27:16
○ 2026-07-04 10:37:20

○A2400:cb00:2048:1::6819:202d2017-08-13 → 2017-10-06 · 5 obs

○ 2017-08-03 15:01:22
● 2017-08-13 20:21:52
● 2017-10-06 14:48:48
○ 2026-02-15 05:27:16
○ 2026-07-04 10:37:20

●A2606:4700:10::6814:11c72026-02-15 → 2026-07-04 · 3 obs

○ 2017-10-06 14:48:48
● 2026-02-15 05:27:16
● 2026-07-04 10:37:20

●A2606:4700:10::ac42:91b22026-02-15 → 2026-07-04 · 3 obs

○ 2017-10-06 14:48:48
● 2026-02-15 05:27:16
● 2026-07-04 10:37:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
testbook.com	albert.ns.cloudflare.com, rafe.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.58

NS records: albert.ns.cloudflare.com, rafe.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for testbook.com (unsigned zone)

⏱️ Timing

Total: 342ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.66.145.178, 104.20.17.199`
AAAA	2	`2606:4700:10::6814:11c7, 2606:4700:10::ac42:91b2`
NS	2	`albert.ns.cloudflare.com, rafe.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...`
TXT	16	`MS=D2D1943495DE25F9AB4B9F552606800901B83, ahrefs-site-verification_034d9652594c6ec...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`albert.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (albert.ns.cloudflare.com, albert.ns.cloudflare.com, albert.ns.cloudflare.com...)

Analysis

Hierarchy

cdn.testbook.com, apiocrm.testbook.com, api-new.testbook.com, services.testbook.com, ocrm.testbook.com and a few other host names are all children of testbook.com.

IP Addresses

testbook.com directs to four IP numbers, which are 104.20.17.199, 172.66.145.178, 2606:4700:10::6814:11c7 and 2606:4700:10::ac42:91b2.

angular.testbook.com, chatcdn.testbook.com, careers.galco.com and two other host names share IP numbers with testbook.com.

Name Servers

The NS records for testbook.com delegate to albert.ns.cloudflare.com and rafe.ns.cloudflare.com.

testbook.com uses the same name servers as several other domains — among them toukey.com, jwa.workers.dev, luxoft.vip and two more.

The name servers of testbook.com overlap at least partially with those of other domains — among them thegrooves.net, cqxidi.net, universalintelligence.net and two more.

These name servers commonly appear in combination with the name servers marissa.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

albert.ns.cloudflare.com maps to 108.162.193.58, 172.64.33.58, 173.245.59.58 and 3 additional IP addresses.

rafe.ns.cloudflare.com maps to 108.162.192.216, 172.64.32.216, 173.245.58.216 and 3 additional IP addresses.

Mail Servers

Five mail servers handle testbook.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

testbook.com has at least partial mail server overlap with other domains such as ns500698.ns500698.ns500758.ns500698.ns500736.ns500736.ns500735.ns500736.ns500735.ns500576.ns500698.ns500576.ns500576.ns500619.ns500619.trackreceptor.com, cameronlangford.com, ns500693.ns500693.ns500693.ns500734.ns500693.ns500699.ns500693.ns500588.ns500588.ns500588.ns500588.ns500683.ns500110.dtrkdll.com and two more.

These mail servers commonly co-occur with mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and 3 others.

Hostnames that resolve to two IP addresses:

The A records for aspmx.l.google.com return 142.251.179.26 and 2607:f8b0:4004:c1d::1a.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1b.