cert4tech.com - dns.ninja

`cert4tech.com`

DNSSEC	⚠️ Not signed
A	18.67.76.3^{🇺🇸 Amazon18.67.76.0/22}
		PTR	`server-18-67-76-3.iad89.r.cloudfront.net`
A	18.67.76.35^{🇺🇸 Amazon18.67.76.0/22}
A	18.67.76.53^{🇺🇸 Amazon18.67.76.0/22}
A	18.67.76.118^{🇺🇸 Amazon18.67.76.0/22}
NS	`ns-1288.awsdns-33.org` ⭐
		A	2600:9000:5305:800::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1288.awsdns-33.org`
		A	205.251.197.8^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1288.awsdns-33.org`
NS	`ns-1737.awsdns-25.co.uk`
		A	2600:9000:5306:c900::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1737.awsdns-25.co.uk`
		A	205.251.198.201^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1737.awsdns-25.co.uk`
NS	`ns-388.awsdns-48.com`
		A	2600:9000:5301:8400::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-388.awsdns-48.com`
		A	205.251.193.132^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-388.awsdns-48.com`
NS	`ns-616.awsdns-13.net`
		A	2600:9000:5302:6800::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-616.awsdns-13.net`
		A	205.251.194.104^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-616.awsdns-13.net`
MX	`inbound-smtp.us-east-1.amazonaws.com` ⭐
		A	3.211.210.226^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-211-210-226.compute-1.amazonaws.com`
		A	44.206.9.87^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-206-9-87.compute-1.amazonaws.com`
		A	44.210.166.32^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-210-166-32.compute-1.amazonaws.com`
		A	54.164.173.191^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-164-173-191.compute-1.amazonaws.com`
		A	54.197.5.236^{🇺🇸 Amazon54.196.0.0/15 EC2 IAD 54.196.0.0/15}
			PTR	`ec2-54-197-5-236.compute-1.amazonaws.com`
SOA	`ns-1288.awsdns-33.org`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=1786629129

Subdomains

lab.cert4tech.com

Same first word

cert4tech.com

DNS History

41 records (9 active, 32 former)

●NSns-1288.awsdns-33.org2026-06-25 → 2026-08-13 · 2 obs

● 2026-06-25 00:46:24
● 2026-08-13 13:54:26

●NSns-1737.awsdns-25.co.uk2026-06-25 → 2026-08-13 · 2 obs

● 2026-06-25 00:46:24
● 2026-08-13 13:54:26

●NSns-388.awsdns-48.com2026-06-25 → 2026-08-13 · 2 obs

● 2026-06-25 00:46:24
● 2026-08-13 13:54:26

●NSns-616.awsdns-13.net2026-06-25 → 2026-08-13 · 2 obs

● 2026-06-25 00:46:24
● 2026-08-13 13:54:26

●MXinbound-smtp.us-east-1.amazonaws.com2026-06-25 → 2026-08-13 · 2 obs

● 2026-06-25 00:46:24
● 2026-08-13 13:54:26

○A108.158.173.102026-07-09 → 2026-08-11 · 26 obs

○ 2026-07-04 21:01:52
● 2026-07-09 07:38:04
○ 2026-07-10 12:36:58
● 2026-07-10 18:26:34
○ 2026-07-11 10:07:54
● 2026-07-11 12:45:06
○ 2026-07-12 18:46:04
● 2026-07-13 12:45:16
○ 2026-07-14 03:02:10
● 2026-07-15 02:54:10
○ 2026-07-15 18:43:02
● 2026-07-15 22:54:20
○ 2026-07-16 13:28:30
● 2026-07-16 14:51:38
○ 2026-07-24 10:25:44
● 2026-08-01 19:32:44
○ 2026-08-04 15:49:28
● 2026-08-04 17:34:22
○ 2026-08-05 07:02:58
● 2026-08-06 03:04:04
○ 2026-08-10 10:24:48
● 2026-08-10 22:01:02
○ 2026-08-11 05:47:24
● 2026-08-11 16:11:50
○ 2026-08-12 19:31:04
○ 2026-08-13 13:54:26

○A108.158.173.122026-07-09 → 2026-08-11 · 26 obs

○A108.158.173.32026-07-09 → 2026-08-11 · 26 obs

○A108.158.173.532026-07-09 → 2026-08-11 · 26 obs

○A108.158.186.1072026-07-01 → 2026-07-25 · 10 obs

○ 2026-06-30 08:51:20
● 2026-07-01 21:59:44
○ 2026-07-02 03:10:50
● 2026-07-24 10:25:44
○ 2026-07-24 11:05:36
● 2026-07-24 12:43:36
○ 2026-07-25 10:18:12
● 2026-07-25 20:03:18
○ 2026-07-27 22:31:12
○ 2026-08-13 13:54:26

○A108.158.186.472026-07-01 → 2026-07-25 · 10 obs

○A108.158.186.512026-07-01 → 2026-07-25 · 10 obs

○A108.158.186.812026-07-01 → 2026-07-25 · 10 obs

○A18.160.249.432026-06-30 → 2026-07-02 · 6 obs

○ 2026-06-30 06:50:42
● 2026-06-30 08:51:20
○ 2026-07-01 21:59:44
● 2026-07-02 03:10:50
○ 2026-07-04 21:01:52
○ 2026-08-13 13:54:26

○A18.160.249.492026-06-30 → 2026-07-02 · 6 obs

○ 2026-06-30 06:50:42
● 2026-06-30 08:51:20
○ 2026-07-01 21:59:44
● 2026-07-02 03:10:50
○ 2026-07-04 21:01:52
○ 2026-08-13 13:54:26

○A18.160.249.892026-06-30 → 2026-07-02 · 6 obs

○ 2026-06-30 06:50:42
● 2026-06-30 08:51:20
○ 2026-07-01 21:59:44
● 2026-07-02 03:10:50
○ 2026-07-04 21:01:52
○ 2026-08-13 13:54:26

○A18.160.249.942026-06-30 → 2026-07-02 · 6 obs

○ 2026-06-30 06:50:42
● 2026-06-30 08:51:20
○ 2026-07-01 21:59:44
● 2026-07-02 03:10:50
○ 2026-07-04 21:01:52
○ 2026-08-13 13:54:26

●A18.67.76.1182026-06-25 → 2026-08-13 · 23 obs

○ 2026-06-25 00:46:24
● 2026-06-25 01:53:10
○ 2026-06-25 12:30:34
● 2026-06-25 18:15:32
○ 2026-06-26 03:59:46
● 2026-06-26 07:35:34
○ 2026-06-26 11:28:10
● 2026-06-26 19:58:34
○ 2026-06-28 19:28:54
● 2026-06-29 04:04:54
○ 2026-06-30 02:36:42
● 2026-06-30 06:50:42
○ 2026-06-30 08:51:20
● 2026-07-10 12:36:58
○ 2026-07-10 18:26:34
● 2026-07-11 10:07:54
○ 2026-07-11 12:45:06
● 2026-08-04 15:49:28
○ 2026-08-04 17:34:22
● 2026-08-11 08:57:50
○ 2026-08-11 16:11:50
● 2026-08-12 19:31:04
● 2026-08-13 13:54:26

●A18.67.76.32026-06-25 → 2026-08-13 · 23 obs

●A18.67.76.352026-06-25 → 2026-08-13 · 23 obs

●A18.67.76.532026-06-25 → 2026-08-13 · 23 obs

○A3.161.136.1102026-07-29 → 2026-07-29 · 4 obs

○ 2026-07-27 22:31:12
● 2026-07-29 01:57:26
○ 2026-08-01 15:19:56
○ 2026-08-13 13:54:26

○A3.161.136.1242026-07-29 → 2026-07-29 · 4 obs

○ 2026-07-27 22:31:12
● 2026-07-29 01:57:26
○ 2026-08-01 15:19:56
○ 2026-08-13 13:54:26

○A3.161.136.1272026-07-29 → 2026-07-29 · 4 obs

○ 2026-07-27 22:31:12
● 2026-07-29 01:57:26
○ 2026-08-01 15:19:56
○ 2026-08-13 13:54:26

○A3.161.136.132026-07-29 → 2026-07-29 · 4 obs

○ 2026-07-27 22:31:12
● 2026-07-29 01:57:26
○ 2026-08-01 15:19:56
○ 2026-08-13 13:54:26

○A3.164.206.342026-07-16 → 2026-07-16 · 4 obs

○ 2026-07-15 22:54:20
● 2026-07-16 13:28:30
○ 2026-07-16 14:51:38
○ 2026-08-13 13:54:26

○A3.164.206.562026-07-16 → 2026-07-16 · 4 obs

○ 2026-07-15 22:54:20
● 2026-07-16 13:28:30
○ 2026-07-16 14:51:38
○ 2026-08-13 13:54:26

○A3.164.206.602026-07-16 → 2026-07-16 · 4 obs

○ 2026-07-15 22:54:20
● 2026-07-16 13:28:30
○ 2026-07-16 14:51:38
○ 2026-08-13 13:54:26

○A3.164.206.892026-07-16 → 2026-07-16 · 4 obs

○ 2026-07-15 22:54:20
● 2026-07-16 13:28:30
○ 2026-07-16 14:51:38
○ 2026-08-13 13:54:26

○A3.166.192.232026-07-12 → 2026-07-27 · 12 obs

○ 2026-07-11 12:45:06
● 2026-07-12 18:46:04
○ 2026-07-13 12:45:16
● 2026-07-14 03:02:10
○ 2026-07-15 02:54:10
● 2026-07-15 18:43:02
○ 2026-07-15 22:54:20
● 2026-07-25 10:18:12
○ 2026-07-25 20:03:18
● 2026-07-27 22:31:12
○ 2026-07-29 01:57:26
○ 2026-08-13 13:54:26

○A3.166.192.352026-07-12 → 2026-07-27 · 12 obs

○A3.166.192.402026-07-12 → 2026-07-27 · 12 obs

○A3.166.192.962026-07-12 → 2026-07-27 · 12 obs

○A3.167.212.302026-07-04 → 2026-08-11 · 14 obs

○ 2026-07-02 03:10:50
● 2026-07-04 21:01:52
○ 2026-07-09 07:38:04
● 2026-07-24 11:05:36
○ 2026-07-24 12:43:36
● 2026-08-01 15:19:56
○ 2026-08-01 19:32:44
● 2026-08-05 07:02:58
○ 2026-08-06 03:04:04
● 2026-08-10 10:24:48
○ 2026-08-10 22:01:02
● 2026-08-11 05:47:24
○ 2026-08-11 08:57:50
○ 2026-08-13 13:54:26

○A3.167.212.482026-07-04 → 2026-08-11 · 14 obs

○A3.167.212.722026-07-04 → 2026-08-11 · 14 obs

○A3.167.212.972026-07-04 → 2026-08-11 · 14 obs

○A3.174.141.1022026-06-25 → 2026-06-30 · 13 obs

● 2026-06-25 00:46:24
○ 2026-06-25 01:53:10
● 2026-06-25 12:30:34
○ 2026-06-25 18:15:32
● 2026-06-26 03:59:46
○ 2026-06-26 07:35:34
● 2026-06-26 11:28:10
○ 2026-06-26 19:58:34
● 2026-06-28 19:28:54
○ 2026-06-29 04:04:54
● 2026-06-30 02:36:42
○ 2026-06-30 06:50:42
○ 2026-08-13 13:54:26

○A3.174.141.1072026-06-25 → 2026-06-30 · 13 obs

○A3.174.141.222026-06-25 → 2026-06-30 · 13 obs

○A3.174.141.952026-06-25 → 2026-06-30 · 13 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, k.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net...	-
cert4tech.com	ns-616.awsdns-13.net, ns-388.awsdns-48.com, ns-1737.awsdns-25.co.uk, ns-1288.awsdns-33.org	2 records

✅ Authoritative Response

Server:205.251.194.104

NS records: ns-616.awsdns-13.net, ns-388.awsdns-48.com, ns-1737.awsdns-25.co.uk, ns-1288.awsdns-33.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cert4tech.com (unsigned zone)

⏱️ Timing

Total: 549ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.67.76.3, 18.67.76.53...`
NS	4	`ns-1288.awsdns-33.org, ns-1737.awsdns-25.co.uk...`
MX	1	`inbound-smtp.us-east-1.amazonaws.com (pr`
SOA	1	`ns-1288.awsdns-33.org awsdns-hostmaster.`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-388.awsdns-48.com, ns-388.awsdns-48.com)

Analysis

Hierarchy

cert4tech.com is a parent domain of lab.cert4tech.com.

IP Addresses

cert4tech.com has four IP addresses: 18.67.76.3, 18.67.76.35, 18.67.76.53 and 18.67.76.118.

drapponline.com, d32755wbrh8le5.cloudfront.net, dgd2oyv1vqvt1.cloudfront.net plus two other host names have IP numbers in common with cert4tech.com.

Name Servers

Four name servers handle the delegation for cert4tech.com: ns-388.awsdns-48.com, ns-616.awsdns-13.net, ns-1288.awsdns-33.org and ns-1737.awsdns-25.co.uk.

cert4tech.com shares at least some of its name servers with other domains, including book-a-hotel-in-chicago.com, balda-game.online, zillowgroup.auth0app.com.pivot.prod.auth0edge.com and two others.

These name servers are frequently paired with the name servers ns-508.awsdns-63.com, ns-716.awsdns-25.net and ns-1959.awsdns-52.co.uk.

The host names ns-388.awsdns-48.com, ns-616.awsdns-13.net, ns-1288.awsdns-33.org and ns-1737.awsdns-25.co.uk each resolve to two IP addresses: ns-388.awsdns-48.com resolves to 205.251.193.132 and 2600:9000:5301:8400::1; ns-616.awsdns-13.net resolves to 205.251.194.104 and 2600:9000:5302:6800::1; ns-1288.awsdns-33.org resolves to 205.251.197.8 and 2600:9000:5305:800::1; ns-1737.awsdns-25.co.uk resolves to 205.251.198.201 and 2600:9000:5306:c900::1.

Mail Servers

cert4tech.com uses one mail server — inbound-smtp.us-east-1.amazonaws.com.

The mail server setup of cert4tech.com matches that of other domains such as carrygreen.com, sahabpardaz.slack.com, t-dms.jp and two others.

At least some of the mail servers used by cert4tech.com are shared with other domains: testeract.atlassian.net, steelnovus.atlassian.net, ai-finearts.com and two others among them.

These mail servers tend to be used in conjunction with the mail servers inbound-smtp.us-west-2.amazonaws.com.

inbound-smtp.us-east-1.amazonaws.com has five IP addresses: 3.211.210.226, 44.206.9.87, 44.210.166.32 plus two others.