schoolofcodinguk.com - dns.ninja

`schoolofcodinguk.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:5d08^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:c9dd^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.93.8^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.201.221^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arturo.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cd8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arturo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3d8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arturo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23d8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arturo.ns.cloudflare.com`
		A	108.162.195.216^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arturo.ns.cloudflare.com`
		A	162.159.44.216^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arturo.ns.cloudflare.com`
		A	172.64.35.216^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arturo.ns.cloudflare.com`
NS	`dara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a5b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c05b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:205b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dara.ns.cloudflare.com`
		A	108.162.192.91^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dara.ns.cloudflare.com`
		A	172.64.32.91^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dara.ns.cloudflare.com`
		A	173.245.58.91^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dara.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c07::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f26.1e100.net`
		A	2607:f8b0:4004:c07::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f27.1e100.net`
		A	2607:f8b0:4004:c1f::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f26.1e100.net`
		A	2607:f8b0:4004:c1f::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`pd-in-f27.1e100.net`
		A	142.251.179.26^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f26.1e100.net`
		A	142.251.179.27^{🇺🇸 Google142.251.179.0/24}
			PTR	`pd-in-f27.1e100.net`
		A	172.253.62.26^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f26.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-in-f27.1e100.net`
		A	172.253.115.26^{🇺🇸 Google172.253.115.0/24}
			PTR	`bg-in-f26.1e100.net`
TXT	`google-site-verification=FBD9PY0PSAh9HHCgeDyIZi4NDR438lYoiv_HAQ_QUg0`
TXT	`google-site-verification=ziRz92KElFahaI0_M1miYQiESP21UCbQt1_F250ZCiI`
TXT	`v=spf1 include:secureserver.net -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.93.8, 172.67.201.221
		IPv6 hints	2606:4700:3033::6815:5d08, 2606:4700:3033::ac43:c9dd
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=48, name=cloudflare-ech.com
SOA	`arturo.ns.cloudflare.com`dns@cloudflare.com serial=2405775219

`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=1781377243

Subdomains

mail.schoolofcodinguk.com

Same first word

schoolofcodinguk.com

DNS History

11 records (7 active, 4 former)

●NSarturo.ns.cloudflare.com2026-02-18 → 2026-06-13 · 3 obs

○ 2019-12-15 08:09:32
● 2026-02-18 01:46:22
● 2026-06-13 19:09:50

●NSdara.ns.cloudflare.com2026-02-18 → 2026-06-13 · 3 obs

○ 2019-12-15 08:09:32
● 2026-02-18 01:46:22
● 2026-06-13 19:09:50

○NSns29.domaincontrol.com2019-12-15 → 2019-12-15 · 3 obs

● 2019-12-15 08:09:32
○ 2026-02-18 01:46:22
○ 2026-06-13 19:09:50

○NSns30.domaincontrol.com2019-12-15 → 2019-12-15 · 3 obs

● 2019-12-15 08:09:32
○ 2026-02-18 01:46:22
○ 2026-06-13 19:09:50

○MXmail.schoolofcodinguk.com2026-02-18 → 2026-04-07 · 4 obs

● 2026-02-18 01:46:22
● 2026-04-07 15:17:02
○ 2026-05-17 06:38:04
○ 2026-06-13 19:09:50

●MXsmtp.google.com2026-05-17 → 2026-06-13 · 3 obs

○ 2026-04-07 15:17:02
● 2026-05-17 06:38:04
● 2026-06-13 19:09:50

●A104.21.93.82026-02-18 → 2026-06-13 · 3 obs

○ 2019-12-15 08:09:32
● 2026-02-18 01:46:22
● 2026-06-13 19:09:50

●A172.67.201.2212026-02-18 → 2026-06-13 · 3 obs

○ 2019-12-15 08:09:32
● 2026-02-18 01:46:22
● 2026-06-13 19:09:50

○A195.74.53.2122019-12-15 → 2019-12-15 · 3 obs

● 2019-12-15 08:09:32
○ 2026-02-18 01:46:22
○ 2026-06-13 19:09:50

●A2606:4700:3033::6815:5d082026-02-18 → 2026-06-13 · 3 obs

○ 2019-12-15 08:09:32
● 2026-02-18 01:46:22
● 2026-06-13 19:09:50

●A2606:4700:3033::ac43:c9dd2026-02-18 → 2026-06-13 · 3 obs

○ 2019-12-15 08:09:32
● 2026-02-18 01:46:22
● 2026-06-13 19:09:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
schoolofcodinguk.com	dara.ns.cloudflare.com, arturo.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.91

NS records: dara.ns.cloudflare.com, arturo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for schoolofcodinguk.com (unsigned zone)

⏱️ Timing

Total: 321ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.93.8, 172.67.201.221`
AAAA	2	`2606:4700:3033::6815:5d08, 2606:4700:3033::ac43:c9dd`
NS	2	`arturo.ns.cloudflare.com, dara.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	3	`google-site-verification=FBD9PY0PSAh9HHC, google-site-verification=ziRz92KElFahaI0...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`arturo.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

mail.schoolofcodinguk.com is delegated beneath schoolofcodinguk.com.

IP Addresses

schoolofcodinguk.com points to four IP numbers: 104.21.93.8, 172.67.201.221, 2606:4700:3033::6815:5d08 and 2606:4700:3033::ac43:c9dd.

Additional host names — shuiguo666.com, es.vividphoenix.shop, www.j8csgo.net and two others — share IP numbers with schoolofcodinguk.com.

Name Servers

DNS delegation for schoolofcodinguk.com points to two name servers: arturo.ns.cloudflare.com and dara.ns.cloudflare.com.

schoolofcodinguk.com shares its name server setup with other domains, including iwantthat.com, doctorsax.com, 241.co.il and two others.

There is at least partial name server overlap between schoolofcodinguk.com and other domains — retpress.com, bangmeraw.com, mg1027.cc and two more among them.

The name servers amy.ns.cloudflare.com, coen.ns.cloudflare.com and rene.ns.cloudflare.com are often found in combination with these name servers.

Host names with 6 IP numbers:

arturo.ns.cloudflare.com has IP addresses 108.162.195.216, 162.159.44.216 and 172.64.35.216, plus 3 other.

dara.ns.cloudflare.com has IP addresses 108.162.192.91, 172.64.32.91 and 173.245.58.91, plus 3 other.

Mail Servers

schoolofcodinguk.com has one mail server: smtp.google.com.

schoolofcodinguk.com shares the same mail server setup as other domains, including jens.marketing, learnspanishwithina.com, glastonburylittleleague.org and two others.

schoolofcodinguk.com shares mail servers — at least in part — with other domains, including frontleap.com, linares.tecnm.mx, superpowerjobs.com and two others.

These mail servers are frequently used alongside the mail servers aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com, plus two others.

smtp.google.com points to 9 IP numbers: 142.251.179.26, 142.251.179.27, 172.253.62.26 and 6 other.