ctbgroup.com - dns.ninja

`ctbgroup.com`

DNSSEC	⚠️ Not signed
A	65.21.185.240^{🇫🇮 Hetzner65.21.0.0/16 HETZNER-DC}
		PTR	`sites1.cloutions.com`
NS	`dns25.servidoresdns.net` ⭐
		A	217.76.128.178^{🇪🇸 IONOS-AS217.76.128.0/19 arsys.es}
			PTR	`dns25.servidoresdns.net`
NS	`dns26.servidoresdns.net`
		A	82.223.218.144^{🇪🇸 IONOS-AS82.223.0.0/16 arsys.es}
			PTR	`dns26.servidoresdns.net`
MX	`ctbgroup-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::4^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::c^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::10^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbapr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::6^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am4pr0401cu00106.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.28^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00204.inbound.protection.outlook.com`
		A	52.101.73.30^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am7pr05cu00306.inbound.protection.outlook.com`
TXT	`google-site-verification=I1dPGhktjYVtqG9nPP8AAOIC2XEcsTm6nFrxYig-Za8`
TXT	`MS=ms12557732`
TXT	`v=spf1 include:_spf.serviciodecorreo.es include:spf.protection.outlook.com in...`
SOA	`dns25.servidoresdns.net`hostmaster@servidoresdns.net 2025-04-10 #41

`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=1785334292

Same first word

ctbgroup.be

ctbgroup.com

ctbgroup.es

ctbgroup.org

Similar names

btcgroup.ru

btcgroup.co.za

cbtgroup.com

tcbgroup.eu

tbcgroup.net

btcgroup.com

procutbg.com

tbcgroup.org

groupbtc.com

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tcbgroup.se

cbtgroup.ie

tbcgroup.com.sg

tbcgroup.co

btcgroup.pl

tbcgroup.in

groupcbt.com

tbcgroup.ru

bctgroup.net

tbcgroup.es

bctgroup.com

procutgb.com

btcgroup.us

tbcgroup.cn

tcbgroup.biz

bctgroup.ch

tcbgroup.co.uk

btcgroup.biz

btcgroup.nl

grupotbc.com

bctgroup.com.au

tcbgroup.co

btcgroup.eu

grupobtc.es

btcgroup.de

tbcgroup.ge

btcgroup.sk

tbcgroup.com

DNS History

13 records (4 active, 9 former)

○NSdns1.name-services.com2015-05-30 → 2017-06-24 · 4 obs

● 2015-05-30 12:34:50
● 2017-06-24 15:48:26
○ 2026-03-28 21:56:02
○ 2026-07-29 14:26:14

○NSdns2.name-services.com2015-05-30 → 2017-06-24 · 4 obs

● 2015-05-30 12:34:50
● 2017-06-24 15:48:26
○ 2026-03-28 21:56:02
○ 2026-07-29 14:26:14

●NSdns25.servidoresdns.net2026-03-28 → 2026-07-29 · 3 obs

○ 2017-06-24 15:48:26
● 2026-03-28 21:56:02
● 2026-07-29 14:26:14

●NSdns26.servidoresdns.net2026-03-28 → 2026-07-29 · 3 obs

○ 2017-06-24 15:48:26
● 2026-03-28 21:56:02
● 2026-07-29 14:26:14

○NSdns3.name-services.com2015-05-30 → 2017-06-24 · 4 obs

● 2015-05-30 12:34:50
● 2017-06-24 15:48:26
○ 2026-03-28 21:56:02
○ 2026-07-29 14:26:14

○NSdns4.name-services.com2015-05-30 → 2017-06-24 · 4 obs

● 2015-05-30 12:34:50
● 2017-06-24 15:48:26
○ 2026-03-28 21:56:02
○ 2026-07-29 14:26:14

○NSdns5.name-services.com2015-05-30 → 2017-06-24 · 4 obs

● 2015-05-30 12:34:50
● 2017-06-24 15:48:26
○ 2026-03-28 21:56:02
○ 2026-07-29 14:26:14

●MXctbgroup-com.mail.protection.outlook.com2026-03-28 → 2026-07-29 · 2 obs

● 2026-03-28 21:56:02
● 2026-07-29 14:26:14

○A217.76.132.1802026-03-28 → 2026-03-28 · 4 obs

○ 2017-06-24 15:48:26
● 2026-03-28 21:56:02
○ 2026-06-26 05:39:02
○ 2026-07-29 14:26:14

●A65.21.185.2402026-06-26 → 2026-07-29 · 3 obs

○ 2026-03-28 21:56:02
● 2026-06-26 05:39:02
● 2026-07-29 14:26:14

○A98.124.198.12015-05-30 → 2015-10-29 · 4 obs

● 2015-05-30 12:34:50
● 2015-10-29 05:29:54
○ 2016-01-17 23:11:04
○ 2026-07-29 14:26:14

○A98.124.199.12015-05-30 → 2015-05-30 · 3 obs

● 2015-05-30 12:34:50
○ 2017-06-24 15:48:26
○ 2026-07-29 14:26:14

○A98.124.199.852016-01-17 → 2017-06-24 · 5 obs

○ 2015-10-29 05:29:54
● 2016-01-17 23:11:04
● 2017-06-24 15:48:26
○ 2026-03-28 21:56:02
○ 2026-07-29 14:26:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ctbgroup.com	dns25.servidoresdns.net, dns26.servidoresdns.net	-

✅ Authoritative Response

Server:217.76.128.178

NS records: dns25.servidoresdns.net, dns26.servidoresdns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctbgroup.com (unsigned zone)

⏱️ Timing

Total: 1683ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`65.21.185.240`
NS	2	`dns26.servidoresdns.net, dns25.servidoresdns.net`
MX	1	`ctbgroup-com.mail.protection.outlook.com`
TXT	3	`v=spf1 include:_spf.serviciodecorreo.es , MS=ms12557732...`
SOA	1	`dns25.servidoresdns.net hostmaster.servi`

Analysis

IP Addresses

ctbgroup.com directs to one IP number, which is 65.21.185.240.

Among the host names that share IP numbers with ctbgroup.com are gabinetpsicologicmataro.com, www.valvulasyacoplamientos.com, unitsgroup.com and two others.

Name Servers

Two name servers handle the delegation for ctbgroup.com: dns25.servidoresdns.net and dns26.servidoresdns.net.

ctbgroup.com has the same name server delegation as a number of other domains, such as campuscecoform.com, conseileuropeendejusticejuvenile.org, bussolutions.es and two more.

ctbgroup.com is at least partially co-delegated on name servers with other domains, such as sanmiguelpark-ibiza.com.

dns25.servidoresdns.net → 217.76.128.178 and dns26.servidoresdns.net → 82.223.218.144: one IP number per host name.

Mail Servers

ctbgroup.com routes its mail through a single mail server, ctbgroup-com.mail.protection.outlook.com.

ctbgroup-com.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.68.8, 52.101.73.15 and 52.101.73.28, along with 5 other.