`bookcrastinators.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:38a^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:82c0^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.3.138^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.130.192^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lars.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bc3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lars.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1c3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lars.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21c3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lars.ns.cloudflare.com`
		A	108.162.193.195^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lars.ns.cloudflare.com`
		A	172.64.33.195^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lars.ns.cloudflare.com`
		A	173.245.59.195^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lars.ns.cloudflare.com`
NS	`leah.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a81^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c081^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2081^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leah.ns.cloudflare.com`
		A	108.162.192.129^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	172.64.32.129^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	173.245.58.129^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
TXT	`google-site-verification=Ez7Df_KbJkvZJS6_vODUDADkXtMrtihmYv0iGDzUkfw`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.3.138, 172.67.130.192
		IPv6 hints	2606:4700:3030::6815:38a, 2606:4700:3034::ac43:82c0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=1, name=cloudflare-ech.com
SOA	`lars.ns.cloudflare.com`dns@cloudflare.com serial=2401541624

`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=1778555591

Previously MX for

bookcrastinators.com

Same first word

bookcrastinators.com

DNS History

19 records (6 active, 13 former)

●NSlars.ns.cloudflare.com2026-03-28 → 2026-05-12 · 3 obs

○ 2017-08-08 08:58:46
● 2026-03-28 17:16:10
● 2026-05-12 03:19:00

●NSleah.ns.cloudflare.com2026-03-28 → 2026-05-12 · 3 obs

○ 2017-08-08 08:58:46
● 2026-03-28 17:16:10
● 2026-05-12 03:19:00

○NSns1.dns.skycloud.com2016-07-24 → 2016-07-24 · 4 obs

○ 2016-03-29 13:13:32
● 2016-07-24 18:50:48
○ 2017-08-08 08:58:46
○ 2026-05-12 03:19:00

○NSns2.dns.skycloud.com2016-07-24 → 2016-07-24 · 4 obs

○ 2016-03-29 13:13:32
● 2016-07-24 18:50:48
○ 2017-08-08 08:58:46
○ 2026-05-12 03:19:00

○NSns39.domaincontrol.com2015-06-01 → 2015-12-22 · 4 obs

● 2015-06-01 05:28:04
● 2015-12-22 16:48:04
○ 2016-03-29 13:13:32
○ 2026-05-12 03:19:00

○NSns40.domaincontrol.com2015-06-01 → 2015-12-22 · 4 obs

● 2015-06-01 05:28:04
● 2015-12-22 16:48:04
○ 2016-03-29 13:13:32
○ 2026-05-12 03:19:00

○NSxyz12.bookcrastinators.com2017-08-08 → 2017-08-08 · 4 obs

○ 2016-07-24 18:50:48
● 2017-08-08 08:58:46
○ 2026-03-28 17:16:10
○ 2026-05-12 03:19:00

○NSxyz13.bookcrastinators.com2017-08-08 → 2017-08-08 · 4 obs

○ 2016-07-24 18:50:48
● 2017-08-08 08:58:46
○ 2026-03-28 17:16:10
○ 2026-05-12 03:19:00

○MXbookcrastinators.com2016-07-24 → 2016-07-24 · 4 obs

○ 2016-03-29 13:13:32
● 2016-07-24 18:50:48
○ 2017-08-08 08:58:46
○ 2026-05-12 03:19:00

○MXmail.bookcrastinators.com2017-08-08 → 2017-08-08 · 4 obs

○ 2016-07-24 18:50:48
● 2017-08-08 08:58:46
○ 2026-03-28 17:16:10
○ 2026-05-12 03:19:00

○MXmailstore1.secureserver.net2015-06-01 → 2015-12-22 · 4 obs

● 2015-06-01 05:28:04
● 2015-12-22 16:48:04
○ 2016-03-29 13:13:32
○ 2026-05-12 03:19:00

○MXsmtp.secureserver.net2015-06-01 → 2015-12-22 · 4 obs

● 2015-06-01 05:28:04
● 2015-12-22 16:48:04
○ 2016-03-29 13:13:32
○ 2026-05-12 03:19:00

●A104.21.3.1382026-03-28 → 2026-05-12 · 3 obs

○ 2017-08-08 08:58:46
● 2026-03-28 17:16:10
● 2026-05-12 03:19:00

●A172.67.130.1922026-03-28 → 2026-05-12 · 3 obs

○ 2017-08-08 08:58:46
● 2026-03-28 17:16:10
● 2026-05-12 03:19:00

○A209.141.33.2302017-08-08 → 2017-08-08 · 4 obs

○ 2016-07-24 18:50:48
● 2017-08-08 08:58:46
○ 2026-03-28 17:16:10
○ 2026-05-12 03:19:00

●A2606:4700:3030::6815:38a2026-03-28 → 2026-05-12 · 3 obs

○ 2017-08-08 08:58:46
● 2026-03-28 17:16:10
● 2026-05-12 03:19:00

●A2606:4700:3034::ac43:82c02026-03-28 → 2026-05-12 · 3 obs

○ 2017-08-08 08:58:46
● 2026-03-28 17:16:10
● 2026-05-12 03:19:00

○A5.135.37.2382016-07-24 → 2016-07-24 · 4 obs

○ 2016-03-29 13:13:32
● 2016-07-24 18:50:48
○ 2017-08-08 08:58:46
○ 2026-05-12 03:19:00

○A50.63.202.252015-06-01 → 2015-12-22 · 4 obs

● 2015-06-01 05:28:04
● 2015-12-22 16:48:04
○ 2016-03-29 13:13:32
○ 2026-05-12 03:19:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, c.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net...	-
bookcrastinators.com	leah.ns.cloudflare.com, lars.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.195

NS records: leah.ns.cloudflare.com, lars.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bookcrastinators.com (unsigned zone)

⏱️ Timing

Total: 368ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.130.192, 104.21.3.138`
AAAA	2	`2606:4700:3034::ac43:82c0, 2606:4700:3030::6815:38a`
NS	2	`lars.ns.cloudflare.com, leah.ns.cloudflare.com`
TXT	1	`google-site-verification=Ez7Df_KbJkvZJS6`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`lars.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

bookcrastinators.com points to four IP numbers: 2606:4700:3030::6815:38a, 2606:4700:3034::ac43:82c0, 104.21.3.138 and 172.67.130.192.

Other host names, for instance www.big(0x74697473)videos4u.info, ns2.efweb.gr, blocksy.it, xfmtg.cn and aifed.org share IP numbers with bookcrastinators.com.

Name Servers

bookcrastinators.com's delegation is to two name servers lars.ns.cloudflare.com and leah.ns.cloudflare.com.

bookcrastinators.com shares the same name server configuration as other domains, such as cdkpg.com, casamarinareefhotel.com, rpls-update.live, brandkidsvietnam.com and radiobicentenario.com.ar.

bookcrastinators.com at least partially shares its name servers with other domains, for instance aworrye.irish, excelon.io, bizarre.kiev.ua, dal2.com and ligspace.pl.

These name servers are commonly used alongside mark.ns.cloudflare.com and bonnie.ns.cloudflare.com.

Host names with six IP numbers:

lars.ns.cloudflare.com points to: 2606:4700:58::adf5:3bc3, 2803:f800:50::6ca2:c1c3, 2a06:98c1:50::ac40:21c3, 108.162.193.195, 172.64.33.195 and 173.245.59.195.

leah.ns.cloudflare.com points to: 2606:4700:50::adf5:3a81, 2803:f800:50::6ca2:c081, 2a06:98c1:50::ac40:2081, 108.162.192.129, 172.64.32.129 and 173.245.58.129.

bookcrastinators.com - robtex.com