coderdojo.com - dns.ninja
coderdojo.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:20::681a:2f1Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:20::681a:3f1Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:20::ac43:4a71Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.26.2.241Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.26.3.241Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.74.113Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | april.ns.cloudflare.com ⭐ | ||||||
| NS | tony.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3bf0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tony.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1f0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | tony.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21f0🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | tony.ns.cloudflare.com | ||||||
| A | 108.162.193.240🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tony.ns.cloudflare.com | ||||||
| A | 172.64.33.240🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tony.ns.cloudflare.com | ||||||
| A | 173.245.59.240🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | tony.ns.cloudflare.com | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| A | 2607:f8b0:4004:c21::1a🇺🇸 Google2607:f8b0:4004::/48 | ||||||
| PTR | pe-in-f26.1e100.net | ||||||
| A | 64.233.180.26🇺🇸 Google64.233.180.0/24 | ||||||
| PTR | on-in-f26.1e100.net | ||||||
| PTR | pe-in-f26.1e100.net | ||||||
| MX | alt1.aspmx.l.google.com(5) | ||||||
| A | 2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48 | ||||||
| A | 108.177.123.26🇺🇸 Google108.177.123.0/24 | ||||||
| PTR | lcscld-in-f26.1e100.net | ||||||
| MX | alt2.aspmx.l.google.com(5) | ||||||
| A | 2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48 | ||||||
| PTR | dj-in-f26.1e100.net | ||||||
| A | 172.253.116.26🇺🇸 Google172.253.116.0/24 | ||||||
| PTR | dj-in-f26.1e100.net | ||||||
| MX | aspmx2.googlemail.com(10) | ||||||
| A | 2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48 | ||||||
| A | 108.177.123.27🇺🇸 Google108.177.123.0/24 | ||||||
| PTR | lcscld-in-f27.1e100.net | ||||||
| TXT | MS=ms36064254 | ||||||
| TXT | google-site-verification=4-ACWHwu_HHBaGlJsWo6p1VKN1JimF4s1JtjucL7rAw | ||||||
| TXT | google-site-verification=tPh6XUXnCNsNStEHOpbAKJFuyEHDzbOY1pJx-l3M38c | ||||||
| TXT | v=spf1 include:_spf.google.com ~all | ||||||
| TXT | yandex-verification: a9faf8083b98b2af | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.26.2.241, 104.26.3.241, 172.67.74.113 | ||||||
| IPv6 hints | 2606:4700:20::681a:2f1, 2606:4700:20::681a:3f1, 2606:4700:20::ac43:4a71 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=80, name=cloudflare-ech.com | ||||||
| SOA | april.ns.cloudflare.comdns@cloudflare.com serial=2407287571 | ||||||
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.netnstld@verisign-grs.com serial=1783533552 | ||||||
rank #38254 in the tld
WOT: SAFE (92/100)
📈 Tranco rank: #296,212
Subdomains
Same first word
Similar names
DNS History
20 records (12 active, 8 former)
○NSamy.ns.cloudflare.com2015-06-10 → 2017-02-20 · 4 obs
● 2015-06-10 06:33:14
● 2017-02-20 07:43:00
○ 2026-02-17 05:57:42
○ 2026-07-08 18:24:46
● 2017-02-20 07:43:00
○ 2026-02-17 05:57:42
○ 2026-07-08 18:24:46
●NSapril.ns.cloudflare.com2026-02-17 → 2026-07-08 · 3 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-07-08 18:24:46
● 2026-02-17 05:57:42
● 2026-07-08 18:24:46
○NSdave.ns.cloudflare.com2015-06-10 → 2017-02-20 · 4 obs
● 2015-06-10 06:33:14
● 2017-02-20 07:43:00
○ 2026-02-17 05:57:42
○ 2026-07-08 18:24:46
● 2017-02-20 07:43:00
○ 2026-02-17 05:57:42
○ 2026-07-08 18:24:46
●NStony.ns.cloudflare.com2026-02-17 → 2026-07-08 · 3 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-07-08 18:24:46
● 2026-02-17 05:57:42
● 2026-07-08 18:24:46
●MXalt1.aspmx.l.google.com2015-06-10 → 2026-07-08 · 2 obs
● 2015-06-10 06:33:14
● 2026-07-08 18:24:46
● 2026-07-08 18:24:46
●MXalt2.aspmx.l.google.com2015-06-10 → 2026-07-08 · 2 obs
● 2015-06-10 06:33:14
● 2026-07-08 18:24:46
● 2026-07-08 18:24:46
●MXaspmx.l.google.com2015-06-10 → 2026-07-08 · 2 obs
● 2015-06-10 06:33:14
● 2026-07-08 18:24:46
● 2026-07-08 18:24:46
●MXaspmx2.googlemail.com2015-06-10 → 2026-07-08 · 2 obs
● 2015-06-10 06:33:14
● 2026-07-08 18:24:46
● 2026-07-08 18:24:46
●A104.26.2.2412026-02-17 → 2026-07-08 · 29 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
●A104.26.3.2412026-02-17 → 2026-07-08 · 29 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
●A172.67.74.1132026-02-17 → 2026-07-08 · 29 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
○A188.114.96.02026-02-24 → 2026-05-28 · 27 obs
○ 2026-02-24 18:53:10
● 2026-02-24 22:41:12
○ 2026-03-05 13:56:26
● 2026-03-05 16:00:02
○ 2026-03-13 00:50:34
● 2026-03-13 14:43:20
○ 2026-03-15 03:26:34
● 2026-03-15 08:45:12
○ 2026-03-18 19:29:02
○ 2026-03-25 15:09:40
● 2026-04-02 17:37:12
● 2026-04-07 11:58:40
○ 2026-04-09 02:14:24
○ 2026-04-13 05:29:24
● 2026-04-13 10:54:16
● 2026-04-21 16:06:22
○ 2026-04-24 16:07:30
○ 2026-05-02 22:49:08
● 2026-05-05 06:43:42
● 2026-05-07 00:49:22
○ 2026-05-07 15:35:48
● 2026-05-17 01:08:48
○ 2026-05-17 02:23:50
○ 2026-05-23 04:22:30
● 2026-05-28 19:40:08
○ 2026-05-29 09:25:22
○ 2026-07-08 18:24:46
● 2026-02-24 22:41:12
○ 2026-03-05 13:56:26
● 2026-03-05 16:00:02
○ 2026-03-13 00:50:34
● 2026-03-13 14:43:20
○ 2026-03-15 03:26:34
● 2026-03-15 08:45:12
○ 2026-03-18 19:29:02
○ 2026-03-25 15:09:40
● 2026-04-02 17:37:12
● 2026-04-07 11:58:40
○ 2026-04-09 02:14:24
○ 2026-04-13 05:29:24
● 2026-04-13 10:54:16
● 2026-04-21 16:06:22
○ 2026-04-24 16:07:30
○ 2026-05-02 22:49:08
● 2026-05-05 06:43:42
● 2026-05-07 00:49:22
○ 2026-05-07 15:35:48
● 2026-05-17 01:08:48
○ 2026-05-17 02:23:50
○ 2026-05-23 04:22:30
● 2026-05-28 19:40:08
○ 2026-05-29 09:25:22
○ 2026-07-08 18:24:46
○A188.114.97.02026-02-24 → 2026-05-28 · 27 obs
○ 2026-02-24 18:53:10
● 2026-02-24 22:41:12
○ 2026-03-05 13:56:26
● 2026-03-05 16:00:02
○ 2026-03-13 00:50:34
● 2026-03-13 14:43:20
○ 2026-03-15 03:26:34
● 2026-03-15 08:45:12
○ 2026-03-18 19:29:02
○ 2026-03-25 15:09:40
● 2026-04-02 17:37:12
● 2026-04-07 11:58:40
○ 2026-04-09 02:14:24
○ 2026-04-13 05:29:24
● 2026-04-13 10:54:16
● 2026-04-21 16:06:22
○ 2026-04-24 16:07:30
○ 2026-05-02 22:49:08
● 2026-05-05 06:43:42
● 2026-05-07 00:49:22
○ 2026-05-07 15:35:48
● 2026-05-17 01:08:48
○ 2026-05-17 02:23:50
○ 2026-05-23 04:22:30
● 2026-05-28 19:40:08
○ 2026-05-29 09:25:22
○ 2026-07-08 18:24:46
● 2026-02-24 22:41:12
○ 2026-03-05 13:56:26
● 2026-03-05 16:00:02
○ 2026-03-13 00:50:34
● 2026-03-13 14:43:20
○ 2026-03-15 03:26:34
● 2026-03-15 08:45:12
○ 2026-03-18 19:29:02
○ 2026-03-25 15:09:40
● 2026-04-02 17:37:12
● 2026-04-07 11:58:40
○ 2026-04-09 02:14:24
○ 2026-04-13 05:29:24
● 2026-04-13 10:54:16
● 2026-04-21 16:06:22
○ 2026-04-24 16:07:30
○ 2026-05-02 22:49:08
● 2026-05-05 06:43:42
● 2026-05-07 00:49:22
○ 2026-05-07 15:35:48
● 2026-05-17 01:08:48
○ 2026-05-17 02:23:50
○ 2026-05-23 04:22:30
● 2026-05-28 19:40:08
○ 2026-05-29 09:25:22
○ 2026-07-08 18:24:46
○A2600:3c03::f03c:91ff:fe50:c53d2015-06-10 → 2017-02-20 · 4 obs
● 2015-06-10 06:33:14
● 2017-02-20 07:43:00
○ 2026-02-17 05:57:42
○ 2026-07-08 18:24:46
● 2017-02-20 07:43:00
○ 2026-02-17 05:57:42
○ 2026-07-08 18:24:46
●A2606:4700:20::681a:2f12026-02-17 → 2026-07-08 · 29 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
○ 2026-05-07 00:49:22
● 2026-05-07 15:35:48
○ 2026-05-17 01:08:48
● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
○ 2026-04-02 17:37:12
○ 2026-04-07 11:58:40
● 2026-04-09 02:14:24
● 2026-04-13 05:29:24
○ 2026-04-13 10:54:16
○ 2026-04-21 16:06:22
● 2026-04-24 16:07:30
● 2026-05-02 22:49:08
○ 2026-05-05 06:43:42
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● 2026-05-07 15:35:48
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● 2026-05-17 02:23:50
● 2026-05-23 04:22:30
○ 2026-05-28 19:40:08
● 2026-05-29 09:25:22
● 2026-07-08 18:24:46
●A2606:4700:20::681a:3f12026-02-17 → 2026-07-08 · 29 obs
○ 2017-02-20 07:43:00
● 2026-02-17 05:57:42
● 2026-02-24 18:53:10
○ 2026-02-24 22:41:12
● 2026-03-05 13:56:26
○ 2026-03-05 16:00:02
● 2026-03-13 00:50:34
○ 2026-03-13 14:43:20
● 2026-03-15 03:26:34
○ 2026-03-15 08:45:12
● 2026-03-18 19:29:02
● 2026-03-25 15:09:40
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●A2606:4700:20::ac43:4a712026-02-17 → 2026-07-08 · 29 obs
○ 2017-02-20 07:43:00
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○A2a06:98c1:3120::2026-02-24 → 2026-05-28 · 27 obs
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○A2a06:98c1:3121::2026-02-24 → 2026-05-28 · 27 obs
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○A66.175.209.2002015-06-10 → 2017-02-20 · 4 obs
● 2015-06-10 06:33:14
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🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | k.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net, a.gtld-servers.net... | - |
| coderdojo.com | april.ns.cloudflare.com, tony.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.193.240
NS records: april.ns.cloudflare.com, tony.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coderdojo.com (unsigned zone)
⏱️ Timing
Total: 539ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 104.26.2.241, 104.26.3.241... |
| AAAA | 3 | 2606:4700:20::ac43:4a71, 2606:4700:20::681a:2f1... |
| NS | 2 | april.ns.cloudflare.com, tony.ns.cloudflare.com |
| MX | 4 | aspmx.l.google.com (pri: 1), aspmx2.googlemail.com (pri: 10)... |
| TXT | 5 | MS=ms36064254, google-site-verification=4-ACWHwu_HHBaGl... |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | april.ns.cloudflare.com dns.cloudflare.c |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (april.ns.cloudflare.com, april.ns.cloudflare.com, april.ns.cloudflare.com...)
Analysis
Hierarchy
kata.coderdojo.com and www.coderdojo.com are both subdomains of coderdojo.com.
IP Addresses
coderdojo.com has 6 IP addresses — 104.26.2.241, 104.26.3.241, 172.67.74.113 and 3 more.
Name Servers
coderdojo.com is served by two delegated name servers, april.ns.cloudflare.com and tony.ns.cloudflare.com.
Hostnames that resolve to 6 IP addresses:
tony.ns.cloudflare.com carries IP addresses 108.162.193.240, 172.64.33.240 and 173.245.59.240, with 3 other addresses beyond those.
Mail Servers
Mail for coderdojo.com is handled by four mail servers: aspmx2.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
Four hostnames, each resolving to a pair of IP addresses: aspmx2.googlemail.com directs to 108.177.123.27 and 2800:3f0:4003:c0f::1b; aspmx.l.google.com directs to 64.233.180.26 and 2607:f8b0:4004:c21::1a; alt1.aspmx.l.google.com directs to 108.177.123.26 and 2800:3f0:4003:c0f::1a; alt2.aspmx.l.google.com directs to 172.253.116.26 and 2a00:1450:400b:c02::1a.