ctbk.com - dns.ninja

`ctbk.com`

DNSSEC	⚠️ Not signed
A	35.212.74.84^{🇺🇸 Google35.212.0.0/17}
		PTR	`84.74.212.35.bc.googleusercontent.com`
NS	`ns77.domaincontrol.com` ⭐
		A	2603:5:21c4::31^{🇺🇸 GODADDY-DNS2603:5:21c0::/44}
			PTR	`ns77.domaincontrol.com`
		A	97.74.108.49^{🇺🇸 GODADDY-DNS97.74.108.0/23}
			PTR	`ns77.domaincontrol.com`
NS	`ns78.domaincontrol.com`
		A	2603:5:22c4::31^{🇺🇸 GODADDY-DNS2603:5:22c0::/44}
			PTR	`ns78.domaincontrol.com`
		A	173.201.76.49^{🇺🇸 GODADDY-DNS173.201.76.0/23}
			PTR	`ns78.domaincontrol.com`
MX	`mx-01-us-west-2.prod.hydra.sophos.com` ⭐
		A	18.246.194.22^{🇺🇸 Amazon18.246.0.0/16 EC2 PDX prefix}
			PTR	`ec2-18-246-194-22.us-west-2.compute.amazonaws.com`
		A	34.211.220.3^{🇺🇸 Amazon34.208.0.0/12 EC2 PDX prefix}
			PTR	`ec2-34-211-220-3.us-west-2.compute.amazonaws.com`
		A	52.41.111.253^{🇺🇸 Amazon52.40.0.0/14 EC2 PDX prefix}
			PTR	`ec2-52-41-111-253.us-west-2.compute.amazonaws.com`
MX	`mx-02-us-west-2.prod.hydra.sophos.com`⁽²⁰⁾
		A	18.246.194.22^{🇺🇸 Amazon18.246.0.0/16 EC2 PDX prefix}
			PTR	`ec2-18-246-194-22.us-west-2.compute.amazonaws.com`
		A	34.211.220.3^{🇺🇸 Amazon34.208.0.0/12 EC2 PDX prefix}
			PTR	`ec2-34-211-220-3.us-west-2.compute.amazonaws.com`
		A	52.41.111.253^{🇺🇸 Amazon52.40.0.0/14 EC2 PDX prefix}
			PTR	`ec2-52-41-111-253.us-west-2.compute.amazonaws.com`
TXT	`sophos-domain-verification=f9bc0b634cd081c12fbbd69838e61a9961c5aaef`
TXT	`v=spf1 ip4:72.45.217.66 include:_spf_uswest2.prod.hydra.sophos.com include:sp...`
TXT	`loom-site-verification=cd8b643966ee4e66b39e2949ac17e65e`
TXT	`v=verifydomain MS=1498461`
TXT	`adobe-idp-site-verification=7c92ed650a7b5c70ffad5bf6c41dbde70d5fbcf84a1f6f2c8...`
TXT	`MS=9C90C2461A2E48A447C1CA252EC753DEA79AFA2B`
TXT	`openai-domain-verification=dv-ygJQr2kdWkwt0bFVtlbgGS7H`
TXT	`sophos-domain-verification=f75537e62e56a942fb355ebb7b31de9949b0faa94f89023873...`
TXT	`duo_sso_verification=TNXCfOOFUTkwLdcaQrhxoBvcqV0kBdgoc4toGrC8BCgKpPSCU4OzzB4O...`
TXT	`google-site-verification=nKWOUsJ5GCBGD14JXEL9QZbfjxlwTpTtCVIZlR2varo`
SOA	`ns77.domaincontrol.com`dns@jomax.net 2026-06-22 #0

`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=1785708582

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DNS History

15 records (5 active, 10 former)

○NSns1.sedoparking.com2015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 15:18:54
○ 2015-11-19 05:55:06
○ 2026-08-02 22:39:20

○NSns2.sedoparking.com2015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 15:18:54
○ 2015-11-19 05:55:06
○ 2026-08-02 22:39:20

●NSns77.domaincontrol.com2015-11-19 → 2026-08-02 · 3 obs

○ 2015-07-17 15:18:54
● 2015-11-19 05:55:06
● 2026-08-02 22:39:20

●NSns78.domaincontrol.com2015-11-19 → 2026-08-02 · 3 obs

○ 2015-07-17 15:18:54
● 2015-11-19 05:55:06
● 2026-08-02 22:39:20

○MXd95140a.ess.barracudanetworks.com2017-04-07 → 2017-04-07 · 4 obs

○ 2016-07-10 20:05:56
● 2017-04-07 03:59:28
○ 2026-03-27 01:08:28
○ 2026-08-02 22:39:20

○MXd95140b.ess.barracudanetworks.com2017-04-07 → 2017-04-07 · 4 obs

○ 2016-07-10 20:05:56
● 2017-04-07 03:59:28
○ 2026-03-27 01:08:28
○ 2026-08-02 22:39:20

○MXmail.nickstel.com2015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 15:18:54
○ 2015-11-19 05:55:06
○ 2026-08-02 22:39:20

○MXmailstore1.secureserver.net2015-11-19 → 2016-07-10 · 5 obs

○ 2015-07-17 15:18:54
● 2015-11-19 05:55:06
● 2016-07-10 20:05:56
○ 2017-04-07 03:59:28
○ 2026-08-02 22:39:20

●MXmx-01-us-west-2.prod.hydra.sophos.com2026-03-27 → 2026-08-02 · 3 obs

○ 2017-04-07 03:59:28
● 2026-03-27 01:08:28
● 2026-08-02 22:39:20

●MXmx-02-us-west-2.prod.hydra.sophos.com2026-03-27 → 2026-08-02 · 3 obs

○ 2017-04-07 03:59:28
● 2026-03-27 01:08:28
● 2026-08-02 22:39:20

○MXsmtp.secureserver.net2015-11-19 → 2016-07-10 · 5 obs

○ 2015-07-17 15:18:54
● 2015-11-19 05:55:06
● 2016-07-10 20:05:56
○ 2017-04-07 03:59:28
○ 2026-08-02 22:39:20

○A107.180.51.422017-04-07 → 2017-04-07 · 4 obs

○ 2016-07-10 20:05:56
● 2017-04-07 03:59:28
○ 2026-03-27 01:08:28
○ 2026-08-02 22:39:20

●A35.212.74.842026-03-27 → 2026-08-02 · 3 obs

○ 2017-04-07 03:59:28
● 2026-03-27 01:08:28
● 2026-08-02 22:39:20

○A50.63.202.22015-11-19 → 2016-07-10 · 5 obs

○ 2015-07-17 15:18:54
● 2015-11-19 05:55:06
● 2016-07-10 20:05:56
○ 2017-04-07 03:59:28
○ 2026-08-02 22:39:20

○A72.52.4.912015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 15:18:54
○ 2015-11-19 05:55:06
○ 2026-08-02 22:39:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
ctbk.com	ns77.domaincontrol.com, ns78.domaincontrol.com	4 records

✅ Authoritative Response

Server:173.201.76.49

NS records: ns77.domaincontrol.com, ns78.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctbk.com (unsigned zone)

⏱️ Timing

Total: 174ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`35.212.74.84`
NS	2	`ns77.domaincontrol.com, ns78.domaincontrol.com`
MX	2	`mx-02-us-west-2.prod.hydra.sophos.com (p, mx-01-us-west-2.prod.hydra.sophos.com (p`
TXT	10	`sophos-domain-verification=f9bc0b634cd08, v=spf1 ip4:72.45.217.66 include:_spf_usw...`
SOA	1	`ns77.domaincontrol.com dns.jomax.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns77.domaincontrol.com, ns77.domaincontrol.com, ns78.domaincontrol.com...)

Analysis

IP Addresses

ctbk.com points to a single IP number: 35.212.74.84.

Additional host names — seibelmodern.com, verde-industries.com, iogany.org and two others — share IP numbers with ctbk.com.

Name Servers

DNS delegation for ctbk.com points to two name servers: ns77.domaincontrol.com and ns78.domaincontrol.com.

ctbk.com shares its name server setup with other domains, including sidesstep.com, happytenant.ca, elitecreteflorida.net and two others.

ns77.domaincontrol.com directs to 97.74.108.49 and 2603:5:21c4::31. ns78.domaincontrol.com directs to 173.201.76.49 and 2603:5:22c4::31. Each host name carries two IP addresses.

Mail Servers

ctbk.com has two mail servers: mx-01-us-west-2.prod.hydra.sophos.com and mx-02-us-west-2.prod.hydra.sophos.com.

ctbk.com shares the same mail server setup as other domains, including bdcnewengland.com, sterilucent.com, lohmancompany.com and two others.

ctbk.com shares mail servers — at least in part — with other domains, including orocash.ec, johnaartsgroup.com, dis-eng.com and two others.

mx-01-us-west-2.prod.hydra.sophos.com resolves to 18.246.194.22, 34.211.220.3 and 52.41.111.253; mx-02-us-west-2.prod.hydra.sophos.com resolves to those same three IP addresses.

Host names pointing to 18.246.194.22 IP addresses: mx-01-us-west-2.prod.hydra.sophos.com and mx-02-us-west-2.prod.hydra.sophos.com.

Host names pointing to 34.211.220.3 IP addresses: mx-01-us-west-2.prod.hydra.sophos.com and mx-02-us-west-2.prod.hydra.sophos.com.

Host names pointing to 52.41.111.253 IP addresses: mx-01-us-west-2.prod.hydra.sophos.com and mx-02-us-west-2.prod.hydra.sophos.com.