`bookforbook.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:95d^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:9fbb^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.9.93^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.159.187^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jobs.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bb7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jobs.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jobs.ns.cloudflare.com`
		A	108.162.193.183^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	172.64.33.183^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	173.245.59.183^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
NS	`lina.ns.cloudflare.com`
		A	2606:4700:50::adf5:3abb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lina.ns.cloudflare.com`
		A	108.162.192.187^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	172.64.32.187^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	173.245.58.187^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`protonmail-verification=99a596099e920755a6af6c0a4603dd75bad1f0b5`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.9.93, 172.67.159.187
		IPv6 hints	2606:4700:3034::6815:95d, 2606:4700:3037::ac43:9fbb
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=220, name=cloudflare-ech.com
SOA	`jobs.ns.cloudflare.com`dns@cloudflare.com serial=2400495861

`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=1778806371

Same first word

bookforbook.com

DNS History

17 records (8 active, 9 former)

●NSjobs.ns.cloudflare.com2026-04-06 → 2026-05-15 · 3 obs

○ 2026-03-08 18:51:54
● 2026-04-06 00:45:04
● 2026-05-15 00:53:24

●NSlina.ns.cloudflare.com2026-04-06 → 2026-05-15 · 3 obs

○ 2026-03-08 18:51:54
● 2026-04-06 00:45:04
● 2026-05-15 00:53:24

○NSns1.s501.sureserver.com2026-03-08 → 2026-03-08 · 3 obs

● 2026-03-08 18:51:54
○ 2026-04-06 00:45:04
○ 2026-05-15 00:53:24

○NSns2.s501.sureserver.com2026-03-08 → 2026-03-08 · 3 obs

● 2026-03-08 18:51:54
○ 2026-04-06 00:45:04
○ 2026-05-15 00:53:24

○MXmail.bookforbook.com2026-03-08 → 2026-03-08 · 3 obs

● 2026-03-08 18:51:54
○ 2026-04-06 00:45:04
○ 2026-05-15 00:53:24

●MXmail.protonmail.ch2026-04-06 → 2026-05-15 · 3 obs

○ 2026-03-08 18:51:54
● 2026-04-06 00:45:04
● 2026-05-15 00:53:24

●MXmailsec.protonmail.ch2026-04-06 → 2026-05-15 · 3 obs

○ 2026-03-08 18:51:54
● 2026-04-06 00:45:04
● 2026-05-15 00:53:24

●A104.21.9.932026-04-06 → 2026-05-15 · 11 obs

○ 2026-03-08 18:51:54
● 2026-04-06 00:45:04
● 2026-04-13 16:35:50
○ 2026-04-22 19:06:50
● 2026-04-25 01:08:16
○ 2026-05-06 05:29:22
● 2026-05-06 14:33:20
● 2026-05-12 10:49:56
○ 2026-05-13 22:08:08
● 2026-05-14 11:32:06
● 2026-05-15 00:53:24

●A172.67.159.1872026-04-06 → 2026-05-15 · 11 obs

○A188.114.96.02026-04-22 → 2026-05-13 · 9 obs

○ 2026-04-13 16:35:50
● 2026-04-22 19:06:50
○ 2026-04-25 01:08:16
● 2026-05-06 05:29:22
○ 2026-05-06 14:33:20
○ 2026-05-12 10:49:56
● 2026-05-13 22:08:08
○ 2026-05-14 11:32:06
○ 2026-05-15 00:53:24

○A188.114.97.02026-04-22 → 2026-05-13 · 9 obs

○A192.252.156.2512026-03-08 → 2026-03-08 · 4 obs

○ 2017-02-18 06:53:06
● 2026-03-08 18:51:54
○ 2026-04-06 00:45:04
○ 2026-05-15 00:53:24

●A2606:4700:3034::6815:95d2026-04-06 → 2026-05-15 · 11 obs

●A2606:4700:3037::ac43:9fbb2026-04-06 → 2026-05-15 · 11 obs

○A2a06:98c1:3120::2026-04-22 → 2026-05-13 · 9 obs

○A2a06:98c1:3121::2026-04-22 → 2026-05-13 · 9 obs

○A67.216.164.432015-07-08 → 2017-02-18 · 4 obs

● 2015-07-08 09:54:20
● 2017-02-18 06:53:06
○ 2026-03-08 18:51:54
○ 2026-05-15 00:53:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, m.gtld-servers.net, g.gtld-servers.net, e.gtld-servers.net...	-
bookforbook.com	jobs.ns.cloudflare.com, lina.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.183

NS records: jobs.ns.cloudflare.com, lina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bookforbook.com (unsigned zone)

⏱️ Timing

Total: 267ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.9.93, 172.67.159.187`
AAAA	2	`2606:4700:3037::ac43:9fbb, 2606:4700:3034::6815:95d`
NS	2	`jobs.ns.cloudflare.com, lina.ns.cloudflare.com`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=99a596099e920755, v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jobs.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

Four IP numbers are pointed to by bookforbook.com: 2606:4700:3034::6815:95d, 2606:4700:3037::ac43:9fbb, 104.21.9.93 and 172.67.159.187.

other host names including mslot88eiger.com, torrent-live.org, boeufcochon.com, kamkue.com and poolpay.org share IP numbers with bookforbook.com.

Name Servers

bookforbook.com is delegated to two name servers jobs.ns.cloudflare.com and lina.ns.cloudflare.com.

bookforbook.com shares the same name server setup as other domains, for instance bartucz.com, cybermall.lk, monera.co.uk, jellybus.com and kukaltd.com.

bookforbook.com at least partially shares name servers with other domains, for instance metalonly.de, countrysideallianceireland.org, thrapstonheritage.org.uk, midnighttouch1.com and cam(0x6675636b)s.com.

These name servers are commonly used alongside aleena.ns.cloudflare.com and sevki.ns.cloudflare.com.

Host names with six IP numbers:

Host name jobs.ns.cloudflare.com points to: 2606:4700:58::adf5:3bb7, 2803:f800:50::6ca2:c1b7, 2a06:98c1:50::ac40:21b7, 108.162.193.183, 172.64.33.183 and 173.245.59.183.

Host name lina.ns.cloudflare.com points to: 2606:4700:50::adf5:3abb, 2803:f800:50::6ca2:c0bb, 2a06:98c1:50::ac40:20bb, 108.162.192.187, 172.64.32.187 and 173.245.58.187.

Mail Servers

Two mail servers handle bookforbook.com: mail.protonmail.ch and mailsec.protonmail.ch.

bookforbook.com shares the same mail server setup as other domains, for instance carmus.de, mpompey.com, worldtradeimportexport.com, mettamail.com and naoumov.org.

bookforbook.com shares some mail servers with other domains, at least partially, for instance safeguarddefenders.com, thol.se, udit.ca, simplerandbetter.com and lgemail.com.

Host names with three IPs:

mail.protonmail.ch points to 176.119.200.128, 185.70.42.128 and 185.205.70.128.

mailsec.protonmail.ch points to 176.119.200.129, 185.70.42.129 and 185.205.70.129.

bookforbook.com - robtex.com

bookforbook.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`bookforbook.com`

`com`