gtcertification.com - dns.ninja

`gtcertification.com`

DNSSEC	⚠️ Not signed
A	2a07:7800::212^{🇬🇧 TWENTYI2a07:7800::/48}
A	185.151.30.212^{🇬🇧 TWENTYI185.151.30.0/24}
NS	`ns1.stackdns.com` ⭐
		A	35.197.225.59^{🇬🇧 Google35.197.224.0/20}
			PTR	`59.225.197.35.bc.googleusercontent.com`
NS	`ns2.stackdns.com`
		A	146.148.28.88^{🇧🇪 Google146.148.16.0/20}
			PTR	`88.28.148.146.bc.googleusercontent.com`
NS	`ns3.stackdns.com`
		A	35.198.79.191^{🇩🇪 Google35.198.64.0/20}
			PTR	`191.79.198.35.bc.googleusercontent.com`
NS	`ns4.stackdns.com`
		A	104.196.137.209^{🇺🇸 Google104.196.128.0/20}
			PTR	`209.137.196.104.bc.googleusercontent.com`
MX	`gtcertification-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca0b::^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo2p265cu02300.inbound.protection.outlook.com`
		A	2a01:111:f403:ca0b::1^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo3p265cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca0b::2^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-lo0p265cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:ca1a::^{🇬🇧 Microsoft2a01:111:f000::/36}
			PTR	`mail-cwxp265cu00500.inbound.protection.outlook.com`
		A	52.101.89.0^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo2p265cu02300.inbound.protection.outlook.com`
		A	52.101.89.1^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo0p265cu00201.inbound.protection.outlook.com`
		A	52.101.89.2^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-lo3p265cu00302.inbound.protection.outlook.com`
		A	52.101.99.2^{🇬🇧 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-cwxp265cu00502.inbound.protection.outlook.com`
TXT	`v=spf1 a include:_spf.computorscloud.com ip4:213.78.123.22 ip4:23.236.62.147 ...`
SOA	`ns1.stackdns.com`hostmaster@stackdns.com serial=1715355917

`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=1786771464

WOT: SAFE (68/100)

Subdomains

mailserver.gtcertification.com

Same first word

gtcertification.com

DNS History

13 records (7 active, 6 former)

○NSns0.wixdns.net2015-08-03 → 2020-04-01 · 4 obs

● 2015-08-03 23:21:34
● 2020-04-01 06:04:58
○ 2026-05-08 15:00:40
○ 2026-08-15 05:47:44

●NSns1.stackdns.com2026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

○NSns1.wixdns.net2015-08-03 → 2020-04-01 · 4 obs

● 2015-08-03 23:21:34
● 2020-04-01 06:04:58
○ 2026-05-08 15:00:40
○ 2026-08-15 05:47:44

●NSns2.stackdns.com2026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

●NSns3.stackdns.com2026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

●NSns4.stackdns.com2026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

●MXgtcertification-com.mail.protection.outlook.com2026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

○MXmx.supanames.co.uk2015-08-03 → 2017-03-21 · 4 obs

● 2015-08-03 23:21:34
● 2017-03-21 01:56:52
○ 2020-04-01 06:04:58
○ 2026-08-15 05:47:44

○MXmx1-eu1.ppe-hosted.com2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-21 01:56:52
● 2020-04-01 06:04:58
○ 2026-05-08 15:00:40
○ 2026-08-15 05:47:44

○MXmx2-eu1.ppe-hosted.com2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-21 01:56:52
● 2020-04-01 06:04:58
○ 2026-05-08 15:00:40
○ 2026-08-15 05:47:44

●A185.151.30.2122026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

○A23.236.62.1472015-08-03 → 2020-04-01 · 4 obs

● 2015-08-03 23:21:34
● 2020-04-01 06:04:58
○ 2026-05-08 15:00:40
○ 2026-08-15 05:47:44

●A2a07:7800::2122026-05-08 → 2026-08-15 · 3 obs

○ 2020-04-01 06:04:58
● 2026-05-08 15:00:40
● 2026-08-15 05:47:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net, e.gtld-servers.net...	-
gtcertification.com	ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com	4 records

✅ Authoritative Response

Server:35.197.225.59

NS records: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for gtcertification.com (unsigned zone)

⏱️ Timing

Total: 438ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.151.30.212`
AAAA	1	`2a07:7800::212`
NS	4	`ns3.stackdns.com, ns2.stackdns.com...`
MX	1	`gtcertification-com.mail.protection.outl`
TXT	1	`v=spf1 a include:_spf.computorscloud.com`
SOA	1	`ns1.stackdns.com hostmaster.stackdns.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com...)

Analysis

Hierarchy

gtcertification.com is the parent zone for mailserver.gtcertification.com.

IP Addresses

gtcertification.com directs to two IP numbers, 185.151.30.212 and 2a07:7800::212

Additional host names — halsteadcentre.com, ovive.be, fullthrottleracing.co.uk and two others — share IP numbers with gtcertification.com.

Name Servers

gtcertification.com has four authoritative name servers: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com and ns4.stackdns.com.

gtcertification.com partially shares its NS delegation with several other domains, including davidmaisoncollection.com, sccs-uk.com, onixgo.com and two others.

ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com and ns4.stackdns.com each resolve to one IP address: ns1.stackdns.com resolves to 35.197.225.59, ns2.stackdns.com resolves to 146.148.28.88, ns3.stackdns.com resolves to 35.198.79.191 and ns4.stackdns.com resolves to 104.196.137.209.

Mail Servers

gtcertification.com has one mail server: gtcertification-com.mail.protection.outlook.com.

gtcertification-com.mail.protection.outlook.com points to 8 IP numbers: 52.101.89.0, 52.101.89.1, 52.101.89.2 and 5 other.