`coolbook.se`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:49e2^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:a75d^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.73.226^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.167.93^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alaric.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c1f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alaric.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c31f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alaric.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:231f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alaric.ns.cloudflare.com`
		A	108.162.195.31^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alaric.ns.cloudflare.com`
		A	162.159.44.31^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alaric.ns.cloudflare.com`
		A	172.64.35.31^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alaric.ns.cloudflare.com`
NS	`princess.ns.cloudflare.com`
		A	2606:4700:50::a29f:2611^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`princess.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c211^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`princess.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2211^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`princess.ns.cloudflare.com`
		A	108.162.194.17^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`princess.ns.cloudflare.com`
		A	162.159.38.17^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`princess.ns.cloudflare.com`
		A	172.64.34.17^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`princess.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.73.226, 172.67.167.93
		IPv6 hints	2606:4700:3030::6815:49e2, 2606:4700:3034::ac43:a75d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=194, name=cloudflare-ech.com
SOA	`alaric.ns.cloudflare.com`dns@cloudflare.com serial=2400360817

`se`

	DNSSEC	🔒 Signed (DS record present)
	NS	`catcher-in-the-rye.nic.se` ⭐
	NS	`a.ns.se`
	NS	`b.ns.se`
	NS	`c.ns.se`
	NS	`f.ns.se`
	NS	`g.ns.se`
	NS	`i.ns.se`
	NS	`m.ns.se`
	NS	`x.ns.se`
	NS	`y.ns.se`
	NS	`z.ns.se`
	TXT	`id:3c4ba418-43fb-4c14-8e8a-681bc8e7676a`
	TXT	`SE zone update: 2026-04-03 22:45:12 +0000 (EPOCH 1775256312) (auto)`
	SOA	`catcher-in-the-rye.nic.se`registry-default@nic.se serial=1775256722

WOT: SAFE (85/100)

Same first word

coolbook.cc

coolbook.org

coolbook.top

coolbook.it

coolbook.se

coolbook.us

coolbook.de

coolbook.net

coolbook.ru

coolbook.me

Similar names

bokoloco.com

bookcool.com

bookcool.net

colobook.com

bookcool.com.cn

bookloco.com

DNS History

16 records (6 active, 10 former)

●NSalaric.ns.cloudflare.com2026-03-30 → 2026-04-03 · 3 obs

○ 2018-07-14 22:06:28
● 2026-03-30 20:14:46
● 2026-04-03 23:36:10

○NSns01.one.com2015-06-26 → 2018-07-14 · 4 obs

● 2015-06-26 16:28:24
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

○NSns02.one.com2015-06-26 → 2018-07-14 · 4 obs

● 2015-06-26 16:28:24
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

●NSprincess.ns.cloudflare.com2026-03-30 → 2026-04-03 · 3 obs

○ 2018-07-14 22:06:28
● 2026-03-30 20:14:46
● 2026-04-03 23:36:10

○MXmx1.pub.mailpod6-cph3.one.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-11-08 06:53:16
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

○MXmx2.pub.mailpod6-cph3.one.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-11-08 06:53:16
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

○MXmx3.pub.mailpod6-cph3.one.com2018-07-14 → 2018-07-14 · 4 obs

○ 2016-11-08 06:53:16
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

○MXmxcluster1.one.com2015-06-26 → 2016-11-08 · 4 obs

● 2015-06-26 16:28:24
● 2016-11-08 06:53:16
○ 2018-07-14 22:06:28
○ 2026-04-03 23:36:10

○MXmxcluster2.one.com2015-06-26 → 2016-11-08 · 4 obs

● 2015-06-26 16:28:24
● 2016-11-08 06:53:16
○ 2018-07-14 22:06:28
○ 2026-04-03 23:36:10

●A104.21.73.2262026-03-30 → 2026-04-03 · 3 obs

○ 2018-07-14 22:06:28
● 2026-03-30 20:14:46
● 2026-04-03 23:36:10

●A172.67.167.932026-03-30 → 2026-04-03 · 3 obs

○ 2018-07-14 22:06:28
● 2026-03-30 20:14:46
● 2026-04-03 23:36:10

●A2606:4700:3030::6815:49e22026-03-30 → 2026-04-03 · 3 obs

○ 2018-07-14 22:06:28
● 2026-03-30 20:14:46
● 2026-04-03 23:36:10

●A2606:4700:3034::ac43:a75d2026-03-30 → 2026-04-03 · 3 obs

○ 2018-07-14 22:06:28
● 2026-03-30 20:14:46
● 2026-04-03 23:36:10

○A2a02:2350:5:102:a840:0:a541:20122018-07-14 → 2018-07-14 · 4 obs

○ 2016-11-08 06:53:16
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

○A46.30.212.2302015-06-26 → 2016-04-20 · 4 obs

● 2015-06-26 16:28:24
● 2016-04-20 07:12:32
○ 2016-11-08 06:53:16
○ 2026-04-03 23:36:10

○A46.30.213.1612016-11-08 → 2018-07-14 · 5 obs

○ 2016-04-20 07:12:32
● 2016-11-08 06:53:16
● 2018-07-14 22:06:28
○ 2026-03-30 20:14:46
○ 2026-04-03 23:36:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
se	a.ns.se, b.ns.se, c.ns.se, f.ns.se...	-
coolbook.se	alaric.ns.cloudflare.com, princess.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.31

NS records: alaric.ns.cloudflare.com, princess.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coolbook.se (unsigned zone)

⏱️ Timing

Total: 772ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.73.226, 172.67.167.93`
AAAA	2	`2606:4700:3034::ac43:a75d, 2606:4700:3030::6815:49e2`
NS	2	`alaric.ns.cloudflare.com, princess.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alaric.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

Four IP numbers are pointed to by coolbook.se: 2606:4700:3030::6815:49e2, 2606:4700:3034::ac43:a75d, 104.21.73.226 and 172.67.167.93.

other host names including athlete.exchange, trovianthales.com, bus.westmelon.fun, kocaeliescorts.com and admin.moodlar.pt share IP numbers with coolbook.se.

Name Servers

coolbook.se is delegated to two name servers alaric.ns.cloudflare.com and princess.ns.cloudflare.com.

coolbook.se shares the same name server setup as other domains, for instance jogar-xadrez.com, socialistworld.net, dolphtrade.com, merckinvest.com and avtoshkola142.ru.

coolbook.se at least partially shares name servers with other domains, for instance ent-2014.kz, unamomeluamium.com, baldai.online, 24tvx.xyz and unsub.ac.id.

These name servers are commonly used alongside mark.ns.cloudflare.com, sloan.ns.cloudflare.com, quentin.ns.cloudflare.com, pedro.ns.cloudflare.com, barbara.ns.cloudflare.com and john.ns.cloudflare.com.

Host names with six IP numbers:

Host name alaric.ns.cloudflare.com points to: 2606:4700:58::a29f:2c1f, 2803:f800:50::6ca2:c31f, 2a06:98c1:50::ac40:231f, 108.162.195.31, 162.159.44.31 and 172.64.35.31.

Host name princess.ns.cloudflare.com points to: 2606:4700:50::a29f:2611, 2803:f800:50::6ca2:c211, 2a06:98c1:50::ac40:2211, 108.162.194.17, 162.159.38.17 and 172.64.34.17.

coolbook.se - robtex.com

coolbook.se

se

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`coolbook.se`

`se`