computerfellows.com - dns.ninja

`computerfellows.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:5bbd^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:b25a^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.189^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.178.90^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bristol.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:262f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c22f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bristol.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:222f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bristol.ns.cloudflare.com`
		A	108.162.194.47^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	162.159.38.47^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
		A	172.64.34.47^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bristol.ns.cloudflare.com`
NS	`casey.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c9e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c39e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`casey.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:239e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`casey.ns.cloudflare.com`
		A	108.162.195.158^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
		A	162.159.44.158^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
		A	172.64.35.158^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`casey.ns.cloudflare.com`
MX	`computerfellows-com.in.shield.security` ⭐
		A	18.189.151.200^{🇺🇸 Amazon18.189.0.0/16 EC2 CMH prefix}
			PTR	`ec2-18-189-151-200.us-east-2.compute.amazonaws.com`
		A	18.224.193.68^{🇺🇸 Amazon18.224.0.0/14 EC2 CMH prefix}
			PTR	`ec2-18-224-193-68.us-east-2.compute.amazonaws.com`
TXT	`174696DB79`
TXT	`8uejfq2q7tkcgm211da1i74i9m`
TXT	`Foxit-domain-verification=633909b0a81bde587dffcda7b867cdcc`
TXT	`MS=ms92987258`
TXT	`Z3/kn8Ozs5c5w43Y9TdI7DXv52KYNpknty+BZex1PQFz3okz1omzTgN3rgBmoivhmRXa8ObAbyli4...`
TXT	`duo_sso_verification=VxYwHIwjNA7ZiYDK1W9tIOcwru4oHKLAQyA92seeIlNLCDixfUeJ3fdn...`
TXT	`e7a9uv6k9k06vrl7sbb0s638kk`
TXT	`i4058sigpeb3na26jsmcec0via`
TXT	`lpk5nje40abptlct3s6pdd2vfk`
TXT	`osdoi5unbuit1faut7tcdh3nmq`
TXT	`ppe-3c4b64c1586cbaa00088`
TXT	`sentinelone-domain-verification=aAmyC2jTZJs2wKabfqqHMtvmEHTcln2gFX2qohYTXvb`
TXT	`v=spf1 include:_u.computerfellows.com._spf.smart.ondmarc.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.91.189, 172.67.178.90
		IPv6 hints	2606:4700:3035::6815:5bbd, 2606:4700:3035::ac43:b25a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=156, name=cloudflare-ech.com
SOA	`bristol.ns.cloudflare.com`dns@cloudflare.com serial=2410144749

`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=1785565487

Subdomains

www.computerfellows.com

remote.computerfellows.com

app.computerfellows.com

Same first word

computerfellows.com

DNS History

24 records (7 active, 17 former)

●NSbristol.ns.cloudflare.com2026-03-01 → 2026-08-01 · 3 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
● 2026-08-01 06:25:26

●NScasey.ns.cloudflare.com2026-03-01 → 2026-08-01 · 3 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
● 2026-08-01 06:25:26

○NSns1.dnspark.com2015-05-21 → 2017-02-09 · 4 obs

● 2015-05-21 01:58:02
● 2017-02-09 02:58:22
○ 2020-04-02 18:19:28
○ 2026-08-01 06:25:26

○NSns10.dnsmadeeasy.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○NSns11.dnsmadeeasy.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○NSns12.dnsmadeeasy.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○NSns13.dnsmadeeasy.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○NSns14.dnsmadeeasy.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○NSns15.dnsmadeeasy.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○NSns2.dnspark.net2015-05-21 → 2017-02-09 · 4 obs

● 2015-05-21 01:58:02
● 2017-02-09 02:58:22
○ 2020-04-02 18:19:28
○ 2026-08-01 06:25:26

○MXasp-4.reflexion.net2015-05-21 → 2017-02-09 · 4 obs

● 2015-05-21 01:58:02
● 2017-02-09 02:58:22
○ 2020-04-02 18:19:28
○ 2026-08-01 06:25:26

●MXcomputerfellows-com.in.shield.security2026-03-01 → 2026-08-01 · 3 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
● 2026-08-01 06:25:26

○MXcomputerfellows-com.mail.protection.outlook.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○MXmx1-us1.ppe-hosted.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

○MXmx2-us1.ppe-hosted.com2020-04-02 → 2020-04-02 · 4 obs

○ 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

●A104.21.91.1892026-03-01 → 2026-08-01 · 6 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
● 2026-03-17 20:52:50
○ 2026-03-18 02:35:18
● 2026-03-26 16:57:00
● 2026-08-01 06:25:26

○A162.13.25.1522015-05-21 → 2016-06-21 · 4 obs

● 2015-05-21 01:58:02
● 2016-06-21 18:20:38
○ 2017-02-09 02:58:22
○ 2026-08-01 06:25:26

○A172.64.80.12026-03-18 → 2026-03-18 · 4 obs

○ 2026-03-17 20:52:50
● 2026-03-18 02:35:18
○ 2026-03-26 16:57:00
○ 2026-08-01 06:25:26

●A172.67.178.902026-03-01 → 2026-08-01 · 6 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
● 2026-03-17 20:52:50
○ 2026-03-18 02:35:18
● 2026-03-26 16:57:00
● 2026-08-01 06:25:26

○A2606:4700:3030::6815:5bbd2026-03-01 → 2026-03-01 · 4 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
○ 2026-06-22 16:29:44
○ 2026-08-01 06:25:26

●A2606:4700:3035::6815:5bbd2026-06-22 → 2026-08-01 · 3 obs

○ 2026-03-26 16:57:00
● 2026-06-22 16:29:44
● 2026-08-01 06:25:26

●A2606:4700:3035::ac43:b25a2026-06-22 → 2026-08-01 · 3 obs

○ 2026-03-26 16:57:00
● 2026-06-22 16:29:44
● 2026-08-01 06:25:26

○A2606:4700:3037::ac43:b25a2026-03-01 → 2026-03-01 · 4 obs

○ 2020-04-02 18:19:28
● 2026-03-01 05:25:58
○ 2026-06-22 16:29:44
○ 2026-08-01 06:25:26

○A54.247.91.902017-02-09 → 2020-04-02 · 5 obs

○ 2016-06-21 18:20:38
● 2017-02-09 02:58:22
● 2020-04-02 18:19:28
○ 2026-03-01 05:25:58
○ 2026-08-01 06:25:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
computerfellows.com	bristol.ns.cloudflare.com, casey.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.47

NS records: bristol.ns.cloudflare.com, casey.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for computerfellows.com (unsigned zone)

⏱️ Timing

Total: 230ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.178.90, 104.21.91.189`
AAAA	2	`2606:4700:3035::6815:5bbd, 2606:4700:3035::ac43:b25a`
NS	2	`bristol.ns.cloudflare.com, casey.ns.cloudflare.com`
MX	1	`computerfellows-com.in.shield.security (`
TXT	13	`174696DB79, 8uejfq2q7tkcgm211da1i74i9m...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bristol.ns.cloudflare.com dns.cloudflare`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (bristol.ns.cloudflare.com, bristol.ns.cloudflare.com, bristol.ns.cloudflare.com...)

Analysis

Hierarchy

computerfellows.com sits above www.computerfellows.com, remote.computerfellows.com and app.computerfellows.com in the domain hierarchy.

IP Addresses

computerfellows.com points to the four IP addresses 104.21.91.189, 172.67.178.90, 2606:4700:3035::6815:5bbd and 2606:4700:3035::ac43:b25a.

Two other host names, along with sqs88.top, pixlmap.de and jbhale.com, also share IP numbers with computerfellows.com.

Name Servers

The NS records for computerfellows.com delegate to bristol.ns.cloudflare.com and casey.ns.cloudflare.com.

computerfellows.com shares its NS records with other domains, for example restaurant-lintemporel.fr, thelawnmowingking.com, mycoconutkitchen.com and two others.

There is at least partial name server overlap between computerfellows.com and other domains — alfinaldelcamino.com, luckyhempde.nl, wujianghuishou.org and two more among them.

The name servers kim.ns.cloudflare.com, hugh.ns.cloudflare.com and lewis.ns.cloudflare.com are often found in combination with these name servers.

DNS names with 6 IP addresses:

bristol.ns.cloudflare.com maps to 108.162.194.47, 162.159.38.47, 172.64.34.47 and 3 additional IP addresses.

casey.ns.cloudflare.com maps to 108.162.195.158, 162.159.44.158, 172.64.35.158 and 3 additional IP addresses.

Mail Servers

The sole mail server for computerfellows.com is computerfellows-com.in.shield.security.

computerfellows-com.in.shield.security carries two IP numbers: 18.189.151.200 and 18.224.193.68.