`classgap.com`

DNSSEC	⚠️ Not signed
A	54.72.90.64^{🇮🇪 Amazon54.72.0.0/16 EC2 DUB prefix}
		PTR	`ec2-54-72-90-64.eu-west-1.compute.amazonaws.com`
A	54.195.140.60^{🇮🇪 Amazon54.195.0.0/16 EC2 DUB prefix}
A	99.80.80.249^{🇮🇪 Amazon99.80.0.0/15 EC2 DUB prefix}
NS	`ns-1849.awsdns-39.co.uk` ⭐
		A	2600:9000:5307:3900::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1849.awsdns-39.co.uk`
		A	205.251.199.57^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1849.awsdns-39.co.uk`
NS	`ns-1350.awsdns-40.org`
		A	2600:9000:5305:4600::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1350.awsdns-40.org`
		A	205.251.197.70^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1350.awsdns-40.org`
NS	`ns-152.awsdns-19.com`
		A	2600:9000:5300:9800::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-152.awsdns-19.com`
		A	205.251.192.152^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-152.awsdns-19.com`
NS	`ns-900.awsdns-48.net`
		A	2600:9000:5303:8400::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-900.awsdns-48.net`
		A	205.251.195.132^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-900.awsdns-48.net`
MX	`mail1.classgap.com` ⭐
MX	`mail2.classgap.com`⁽²⁰⁾
MX	`mail.classgap.com`⁽⁴⁰⁾
MX	`inbound-smtp.eu-west-1.amazonaws.com`⁽⁶⁰⁾
		A	18.200.203.69^{🇮🇪 Amazon18.200.0.0/16 EC2 DUB prefix}
			PTR	`ec2-18-200-203-69.eu-west-1.compute.amazonaws.com`
		A	54.76.31.185^{🇮🇪 Amazon54.76.0.0/15 EC2 DUB prefix}
			PTR	`ec2-54-76-31-185.eu-west-1.compute.amazonaws.com`
		A	54.155.140.59^{🇮🇪 Amazon54.155.0.0/16 EC2 DUB prefix}
			PTR	`ec2-54-155-140-59.eu-west-1.compute.amazonaws.com`
TXT	`v=spf1 mx ip4:93.90.28.128/28 ip4:18.203.0.13/32 ip4:3.255.68.133/32 ip4:176....`
SOA	`ns-1849.awsdns-39.co.uk`awsdns-hostmaster@amazon.com serial=1

`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=1776981471

rank #431877 globally
rank #187978 in the tld
📈 Tranco rank: #198,225

Subdomains

mail2.classgap.com

lesson.classgap.com

optimizely.classgap.com

bdtb.classgap.com

mail1.classgap.com

mail.classgap.com

Same first word

classgap.es

classgap.com

Similar names

caplassg.com

pgclassa.com.my

pacglass.com.au

glasscap.net

apcglass.com

spcalgas.com

glasspac.com

cpaglass.com

capglass.com

gapclass.com

gpcasals.com

glasscap.com

DNS History

29 records (11 active, 18 former)

●NSns-1350.awsdns-40.org2026-03-16 → 2026-04-23 · 3 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-04-23 22:15:12

●NSns-152.awsdns-19.com2026-03-16 → 2026-04-23 · 3 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-04-23 22:15:12

●NSns-1849.awsdns-39.co.uk2026-03-16 → 2026-04-23 · 3 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-04-23 22:15:12

●NSns-900.awsdns-48.net2026-03-16 → 2026-04-23 · 3 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-04-23 22:15:12

○NSns1.cdmon.net2015-08-03 → 2018-08-15 · 4 obs

● 2015-08-03 20:15:20
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○NSns2.cdmon.net2015-08-03 → 2018-08-15 · 4 obs

● 2015-08-03 20:15:20
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○NSns3.cdmon.net2015-08-03 → 2018-08-15 · 4 obs

● 2015-08-03 20:15:20
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○NSns4.cdmondns-01.org2018-08-15 → 2018-08-15 · 4 obs

○ 2015-08-03 20:15:20
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○NSns5.cdmondns-01.com2018-08-15 → 2018-08-15 · 4 obs

○ 2015-08-03 20:15:20
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

●MXinbound-smtp.eu-west-1.amazonaws.com2026-03-16 → 2026-04-23 · 3 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-04-23 22:15:12

●MXmail.classgap.com2015-08-03 → 2026-04-23 · 2 obs

● 2015-08-03 20:15:20
● 2026-04-23 22:15:12

●MXmail1.classgap.com2015-12-05 → 2026-04-23 · 3 obs

○ 2015-08-03 20:15:20
● 2015-12-05 05:15:12
● 2026-04-23 22:15:12

●MXmail2.classgap.com2015-08-03 → 2026-04-23 · 5 obs

● 2015-08-03 20:15:20
○ 2015-12-05 05:15:12
○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-04-23 22:15:12

○MXmail3.classgap.com2015-12-05 → 2018-08-15 · 5 obs

○ 2015-08-03 20:15:20
● 2015-12-05 05:15:12
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○A18.200.133.832026-03-16 → 2026-04-23 · 2 obs

○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○A23.97.148.132015-08-03 → 2018-08-15 · 4 obs

● 2015-08-03 20:15:20
● 2018-08-15 01:20:30
○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○A34.246.144.2212026-03-16 → 2026-03-20 · 5 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-03-20 13:45:40
○ 2026-03-24 05:03:06
○ 2026-04-23 22:15:12

○A34.253.1.2192026-03-16 → 2026-04-23 · 2 obs

○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○A52.16.13.922026-03-24 → 2026-03-24 · 4 obs

○ 2026-03-20 13:45:40
● 2026-03-24 05:03:06
○ 2026-04-09 05:07:54
○ 2026-04-23 22:15:12

○A52.213.133.2502026-03-16 → 2026-04-23 · 2 obs

○ 2026-03-16 18:51:58
○ 2026-04-23 22:15:12

○A52.215.141.602026-03-16 → 2026-03-20 · 5 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-03-20 13:45:40
○ 2026-03-24 05:03:06
○ 2026-04-23 22:15:12

○A52.31.64.1722026-04-09 → 2026-04-09 · 3 obs

○ 2026-03-24 05:03:06
● 2026-04-09 05:07:54
○ 2026-04-23 22:15:12

○A52.48.235.722026-04-09 → 2026-04-09 · 3 obs

○ 2026-03-24 05:03:06
● 2026-04-09 05:07:54
○ 2026-04-23 22:15:12

●A54.195.140.602026-04-23 → 2026-04-23 · 2 obs

○ 2026-04-09 05:07:54
● 2026-04-23 22:15:12

○A54.229.176.712026-03-16 → 2026-03-24 · 5 obs

○ 2018-08-15 01:20:30
● 2026-03-16 18:51:58
● 2026-03-24 05:03:06
○ 2026-04-09 05:07:54
○ 2026-04-23 22:15:12

●A54.72.90.642026-04-23 → 2026-04-23 · 2 obs

○ 2026-04-09 05:07:54
● 2026-04-23 22:15:12

○A54.77.133.1052026-03-24 → 2026-03-24 · 4 obs

○ 2026-03-20 13:45:40
● 2026-03-24 05:03:06
○ 2026-04-09 05:07:54
○ 2026-04-23 22:15:12

○A54.78.153.2482026-04-09 → 2026-04-09 · 3 obs

○ 2026-03-24 05:03:06
● 2026-04-09 05:07:54
○ 2026-04-23 22:15:12

●A99.80.80.2492026-04-23 → 2026-04-23 · 2 obs

○ 2026-04-09 05:07:54
● 2026-04-23 22:15:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
classgap.com	ns-152.awsdns-19.com, ns-900.awsdns-48.net, ns-1849.awsdns-39.co.uk, ns-1350.awsdns-40.org	2 records

✅ Authoritative Response

Server:205.251.192.152

NS records: ns-152.awsdns-19.com, ns-900.awsdns-48.net, ns-1849.awsdns-39.co.uk, ns-1350.awsdns-40.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classgap.com (unsigned zone)

⏱️ Timing

Total: 474ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`54.72.90.64, 54.195.140.60...`
NS	4	`ns-1350.awsdns-40.org, ns-152.awsdns-19.com...`
MX	4	`mail.classgap.com (pri: 10), mail1.classgap.com (pri: 20)...`
TXT	1	`v=spf1 mx ip4:93.90.28.128/28 ip4:18.203`
SOA	1	`ns-1849.awsdns-39.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-152.awsdns-19.com, ns-152.awsdns-19.com)

Analysis

Hierarchy

classgap.com is the parent of mail2.classgap.com, lesson.classgap.com, optimizely.classgap.com, bdtb.classgap.com, mail1.classgap.com and a few other host names.

IP Addresses

classgap.com points to three IPs: 54.72.90.64, 54.195.140.60 and 99.80.80.249.

Other host names, for instance ec2-54-195-140-60.eu-west-1.compute.amazonaws.com, share IP numbers with classgap.com.

Name Servers

classgap.com is delegated to four name servers: ns-152.awsdns-19.com, ns-900.awsdns-48.net, ns-1350.awsdns-40.org and ns-1849.awsdns-39.co.uk.

classgap.com at least partially shares name servers with other domains, for instance appningas.com, centralvillagebangkok.com, ecp-cloud-dev.com, qa.taskus.com and ara.cat.

These name servers are commonly used with ns-305.awsdns-38.com, ns-1434.awsdns-51.org and ns-1576.awsdns-05.co.uk.

Host names with two IP numbers:

ns-152.awsdns-19.com points to 2600:9000:5300:9800::1 and 205.251.192.152; ns-900.awsdns-48.net points to 2600:9000:5303:8400::1 and 205.251.195.132; ns-1350.awsdns-40.org points to 2600:9000:5305:4600::1 and 205.251.197.70; ns-1849.awsdns-39.co.uk points to 2600:9000:5307:3900::1 and 205.251.199.57.

Mail Servers

Four mail servers handle classgap.com: mail1.classgap.com, mail2.classgap.com, mail.classgap.com and inbound-smtp.eu-west-1.amazonaws.com.

classgap.com shares some mail servers with other domains, at least partially, for instance etas-dev-staging.com, guava.by, demo-builder.com, newenergyfitness.co.uk and brita.co.jp.

Host names with three IP numbers: inbound-smtp.eu-west-1.amazonaws.com resolves to 18.200.203.69, 54.76.31.185 and 54.155.140.59.

classgap.com - robtex.com

classgap.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`classgap.com`

`com`