`coldbooks.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:bc0e^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:7d9^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.7.217^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.188.14^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`melinda.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ac6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0c6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melinda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20c6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melinda.ns.cloudflare.com`
		A	108.162.192.198^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	172.64.32.198^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
		A	173.245.58.198^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melinda.ns.cloudflare.com`
NS	`mustafa.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c1b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mustafa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c31b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mustafa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:231b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mustafa.ns.cloudflare.com`
		A	108.162.195.27^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mustafa.ns.cloudflare.com`
		A	162.159.44.27^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mustafa.ns.cloudflare.com`
		A	172.64.35.27^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mustafa.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁶⁴⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁹⁷⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.7.217, 172.67.188.14
		IPv6	2606:4700:3032::ac43:bc0e, 2606:4700:3033::6815:7d9
SOA	`melinda.ns.cloudflare.com`dns@cloudflare.com serial=2397420530

`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=1774511472

Previously MX for

coldbooks.com

Same first word

coldbooks.com

DNS History

17 records (9 active, 8 former)

●NSmelinda.ns.cloudflare.com2026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●NSmustafa.ns.cloudflare.com2026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

○NSns1.caghosting.com2015-06-20 → 2016-06-19 · 4 obs

● 2015-06-20 04:29:26
● 2016-06-19 15:42:22
○ 2020-01-20 19:00:56
○ 2026-03-26 08:00:18

○NSns2.caghosting.com2015-06-20 → 2016-06-19 · 4 obs

● 2015-06-20 04:29:26
● 2016-06-19 15:42:22
○ 2020-01-20 19:00:56
○ 2026-03-26 08:00:18

○NSnsg1.namebrightdns.com2020-01-20 → 2020-01-20 · 4 obs

○ 2016-06-19 15:42:22
● 2020-01-20 19:00:56
○ 2026-03-15 11:38:20
○ 2026-03-26 08:00:18

○NSnsg2.namebrightdns.com2020-01-20 → 2020-01-20 · 4 obs

○ 2016-06-19 15:42:22
● 2020-01-20 19:00:56
○ 2026-03-15 11:38:20
○ 2026-03-26 08:00:18

○MXcoldbooks.com2015-06-20 → 2016-06-19 · 4 obs

● 2015-06-20 04:29:26
● 2016-06-19 15:42:22
○ 2020-01-20 19:00:56
○ 2026-03-26 08:00:18

○MXmail.coldbooks.com2015-06-20 → 2016-06-19 · 4 obs

● 2015-06-20 04:29:26
● 2016-06-19 15:42:22
○ 2020-01-20 19:00:56
○ 2026-03-26 08:00:18

●MXroute1.mx.cloudflare.net2026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●MXroute2.mx.cloudflare.net2026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●MXroute3.mx.cloudflare.net2026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●A104.21.7.2172026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●A172.67.188.142026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●A2606:4700:3032::ac43:bc0e2026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

●A2606:4700:3033::6815:7d92026-03-15 → 2026-03-26 · 3 obs

○ 2020-01-20 19:00:56
● 2026-03-15 11:38:20
● 2026-03-26 08:00:18

○A70.166.244.312015-06-20 → 2017-02-10 · 4 obs

● 2015-06-20 04:29:26
● 2017-02-10 03:47:30
○ 2020-01-20 19:00:56
○ 2026-03-26 08:00:18

○CNAMEhdredirect-lb5-1afb6e2973825a56.elb.us-east-1.amazonaws.com2020-01-20 → 2020-01-20 · 3 obs

● 2020-01-20 19:00:56
○ 2026-03-15 11:38:20
○ 2026-03-26 08:00:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
coldbooks.com	melinda.ns.cloudflare.com, mustafa.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.198

NS records: melinda.ns.cloudflare.com, mustafa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coldbooks.com (unsigned zone)

⏱️ Timing

Total: 199ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.7.217, 172.67.188.14`
AAAA	2	`2606:4700:3033::6815:7d9, 2606:4700:3032::ac43:bc0e`
NS	2	`melinda.ns.cloudflare.com, mustafa.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 16), route1.mx.cloudflare.net (pri: 64)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`melinda.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

coldbooks.com points to four IP numbers: 2606:4700:3032::ac43:bc0e, 2606:4700:3033::6815:7d9, 104.21.7.217 and 172.67.188.14.

Other host names, for instance fitcalc.com.br, aquarelleetpinceaux.com, www.pensadoranonimo.com.br, www.lawrence.co.uk and sparkquest.info share IP numbers with coldbooks.com.

Name Servers

Delegation for coldbooks.com rests with two name servers, melinda.ns.cloudflare.com and mustafa.ns.cloudflare.com.

coldbooks.com shares the same name server setup as other domains, including predictionmarketsonline.com, necropsied.com, hema.com.br, gladstonebrookes.co.uk and constructor.app.

coldbooks.com at least partially shares name servers with other domains, for instance decime.be, welovego.com, wlw8.com, friobom.com.br and tbpw.org.

these name servers are commonly used with elaine.ns.cloudflare.com, piotr.ns.cloudflare.com and michelle.ns.cloudflare.com.

Host names with six IP numbers: melinda.ns.cloudflare.com points to: 2606:4700:50::adf5:3ac6, 2803:f800:50::6ca2:c0c6, 2a06:98c1:50::ac40:20c6, 108.162.192.198, 172.64.32.198 and 173.245.58.198. mustafa.ns.cloudflare.com points to: 2606:4700:58::a29f:2c1b, 2803:f800:50::6ca2:c31b, 2a06:98c1:50::ac40:231b, 108.162.195.27, 162.159.44.27 and 172.64.35.27.

Mail Servers

coldbooks.com is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

coldbooks.com shares mail servers with other domains at least in part, for instance watsuprico.com, selg.ca, hartreemetals.co, melo-verse.com and zpch.com.

Host names with six IP numbers:

route1.mx.cloudflare.net points to: 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13.

route2.mx.cloudflare.net points to: 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19.

route3.mx.cloudflare.net points to: 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25.

coldbooks.com - robtex.com

coldbooks.com

com

Previously MX for

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

`coldbooks.com`

`com`