`stem-practice.com`

DNSSEC	⚠️ Not signed
A	18.154.227.12^{🇺🇸 Amazon18.154.227.0/24}
		PTR	`server-18-154-227-12.iad55.r.cloudfront.net`
A	18.154.227.45^{🇺🇸 Amazon18.154.227.0/24}
A	18.154.227.102^{🇺🇸 Amazon18.154.227.0/24}
A	18.154.227.118^{🇺🇸 Amazon18.154.227.0/24}
NS	`ns-100.awsdns-12.com` ⭐
		A	2600:9000:5300:6400::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-100.awsdns-12.com`
		A	205.251.192.100^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-100.awsdns-12.com`
NS	`ns-1273.awsdns-31.org`
		A	2600:9000:5304:f900::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1273.awsdns-31.org`
		A	205.251.196.249^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1273.awsdns-31.org`
NS	`ns-1891.awsdns-44.co.uk`
		A	2600:9000:5307:6300::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1891.awsdns-44.co.uk`
		A	205.251.199.99^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1891.awsdns-44.co.uk`
NS	`ns-563.awsdns-06.net`
		A	2600:9000:5302:3300::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-563.awsdns-06.net`
		A	205.251.194.51^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-563.awsdns-06.net`
SOA	`ns-100.awsdns-12.com`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=1771291435

Same first word

stem-practice.com

DNS History

20 records (8 active, 12 former)

●NSns-100.awsdns-12.com2026-03-03 → 2026-03-09 · 2 obs

● 2026-03-03 06:15:28
● 2026-03-09 05:55:20

●NSns-1273.awsdns-31.org2026-03-03 → 2026-03-09 · 2 obs

● 2026-03-03 06:15:28
● 2026-03-09 05:55:20

●NSns-1891.awsdns-44.co.uk2026-03-03 → 2026-03-09 · 2 obs

● 2026-03-03 06:15:28
● 2026-03-09 05:55:20

●NSns-563.awsdns-06.net2026-03-03 → 2026-03-09 · 2 obs

● 2026-03-03 06:15:28
● 2026-03-09 05:55:20

●A18.154.227.1022026-03-03 → 2026-03-09 · 12 obs

● 2026-03-03 06:15:28
○ 2026-03-03 18:26:54
● 2026-03-04 00:37:50
○ 2026-03-06 00:36:26
○ 2026-03-06 20:24:18
● 2026-03-06 23:52:58
○ 2026-03-07 01:00:28
● 2026-03-07 03:11:38
○ 2026-03-07 11:07:36
○ 2026-03-08 22:11:10
● 2026-03-09 04:45:52
● 2026-03-09 05:55:20

●A18.154.227.1182026-03-03 → 2026-03-09 · 12 obs

●A18.154.227.122026-03-03 → 2026-03-09 · 12 obs

●A18.154.227.452026-03-03 → 2026-03-09 · 12 obs

○A18.164.174.1052026-03-03 → 2026-03-07 · 7 obs

○ 2026-03-03 06:15:28
● 2026-03-03 18:26:54
○ 2026-03-04 00:37:50
○ 2026-03-07 03:11:38
● 2026-03-07 11:07:36
○ 2026-03-08 07:00:28
○ 2026-03-09 05:55:20

○A18.164.174.492026-03-03 → 2026-03-07 · 7 obs

○ 2026-03-03 06:15:28
● 2026-03-03 18:26:54
○ 2026-03-04 00:37:50
○ 2026-03-07 03:11:38
● 2026-03-07 11:07:36
○ 2026-03-08 07:00:28
○ 2026-03-09 05:55:20

○A18.164.174.582026-03-03 → 2026-03-07 · 7 obs

○ 2026-03-03 06:15:28
● 2026-03-03 18:26:54
○ 2026-03-04 00:37:50
○ 2026-03-07 03:11:38
● 2026-03-07 11:07:36
○ 2026-03-08 07:00:28
○ 2026-03-09 05:55:20

○A18.164.174.732026-03-03 → 2026-03-07 · 7 obs

○ 2026-03-03 06:15:28
● 2026-03-03 18:26:54
○ 2026-03-04 00:37:50
○ 2026-03-07 03:11:38
● 2026-03-07 11:07:36
○ 2026-03-08 07:00:28
○ 2026-03-09 05:55:20

○A18.245.143.222026-03-06 → 2026-03-08 · 13 obs

○ 2026-03-04 00:37:50
● 2026-03-06 00:36:26
● 2026-03-06 03:18:34
○ 2026-03-06 13:54:42
● 2026-03-06 20:24:18
○ 2026-03-06 23:52:58
● 2026-03-07 01:00:28
○ 2026-03-07 03:11:38
○ 2026-03-07 11:07:36
● 2026-03-08 07:00:28
● 2026-03-08 22:11:10
○ 2026-03-09 04:45:52
○ 2026-03-09 05:55:20

○A18.245.143.252026-03-06 → 2026-03-08 · 13 obs

○A18.245.143.342026-03-06 → 2026-03-08 · 13 obs

○A18.245.143.822026-03-06 → 2026-03-08 · 13 obs

○A52.84.20.1132026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 03:18:34
● 2026-03-06 13:54:42
○ 2026-03-06 20:24:18
○ 2026-03-09 05:55:20

○A52.84.20.1142026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 03:18:34
● 2026-03-06 13:54:42
○ 2026-03-06 20:24:18
○ 2026-03-09 05:55:20

○A52.84.20.402026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 03:18:34
● 2026-03-06 13:54:42
○ 2026-03-06 20:24:18
○ 2026-03-09 05:55:20

○A52.84.20.672026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 03:18:34
● 2026-03-06 13:54:42
○ 2026-03-06 20:24:18
○ 2026-03-09 05:55:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net, j.gtld-servers.net...	-
stem-practice.com	ns-100.awsdns-12.com, ns-563.awsdns-06.net, ns-1273.awsdns-31.org, ns-1891.awsdns-44.co.uk	1 record

✅ Authoritative Response

Server: 205.251.196.249

NS records: ns-100.awsdns-12.com, ns-563.awsdns-06.net, ns-1273.awsdns-31.org, ns-1891.awsdns-44.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stem-practice.com (unsigned zone)

⏱️ Timing

Total: 702ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`18.154.227.45, 18.154.227.118...`
NS	4	`ns-100.awsdns-12.com, ns-1273.awsdns-31.org...`
SOA	1	`ns-100.awsdns-12.com awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-100.awsdns-12.com)

Analysis

IP Addresses

stem-practice.com points to four IP numbers: 18.154.227.12, 18.154.227.45, 18.154.227.102 and 18.154.227.118.

For instance, other host names help.anchor.fm, jnjwithme.nl, mattcohan.net, prod.warhammer.com and d2p2qy8rzkyzyn.cloudfront.net share IP numbers with stem-practice.com.

Name Servers

stem-practice.com is delegated to four name servers: ns-100.awsdns-12.com, ns-563.awsdns-06.net, ns-1273.awsdns-31.org and ns-1891.awsdns-44.co.uk.

stem-practice.com shares name servers with other domains at least partially, for example dataaxle-usa.org, signup.store, d3089yvtikuv0k.cloudfront.net, jackfant.com and omron-kenpo.org.

These name servers are often used together with the name servers ns-708.awsdns-24.net, ns-1444.awsdns-52.org, ns-1697.awsdns-20.co.uk, ns-908.awsdns-49.net and ns-766.awsdns-31.net.

Host names with two IP numbers:

ns-100.awsdns-12.com points to: 2600:9000:5300:6400::1 and 205.251.192.100

ns-563.awsdns-06.net points to: 2600:9000:5302:3300::1 and 205.251.194.51

ns-1273.awsdns-31.org points to: 2600:9000:5304:f900::1 and 205.251.196.249

ns-1891.awsdns-44.co.uk points to: 2600:9000:5307:6300::1 and 205.251.199.99

stem-practice.com - robtex.com