codecademy.com - dns.ninja

`codecademy.com`

DNSSEC	⚠️ Not signed
A	2606:4700::6811:b778^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700::6811:b878^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.17.183.120^{Cloudflare104.17.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.17.184.120^{Cloudflare104.17.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arnold.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b45^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c145^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arnold.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2145^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arnold.ns.cloudflare.com`
		A	108.162.193.69^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	172.64.33.69^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
		A	173.245.59.69^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arnold.ns.cloudflare.com`
NS	`serena.ns.cloudflare.com`
		A	2606:4700:50::adf5:3adc^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serena.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0dc^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`serena.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20dc^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`serena.ns.cloudflare.com`
		A	108.162.192.220^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serena.ns.cloudflare.com`
		A	172.64.32.220^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serena.ns.cloudflare.com`
		A	173.245.58.220^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serena.ns.cloudflare.com`
MX	`codecademy-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::6^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr21cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:c92c::4^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-dm6pr05cu00404.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00202.inbound.protection.outlook.com`
		A	2a01:111:f403:f804::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-co1pr03cu00403.inbound.protection.outlook.com`
		A	40.93.192.4^{🇺🇸 Microsoft40.80.0.0/12}
			PTR	`mail-dm2pr04cu00404.inbound.protection.outlook.com`
		A	52.101.9.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bl2pr02cu00400.inbound.protection.outlook.com`
		A	52.101.41.6^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01406.inbound.protection.outlook.com`
		A	52.101.194.0^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch5pr02cu00200.inbound.protection.outlook.com`
TXT	`MS=79764F463C8CD2E367B5BF7B1DF1B1C9FFE48501`
TXT	`MS=ms80117904`
TXT	`Mosyle-verification-1750951629`
TXT	`apple-domain-verification=6j9Dh5BuEBtMWMMg`
TXT	`atlassian-domain-verification=m7Ac1Hv/T4ePJa3hgcqMgYHykrG65YAE+oy9aqlN+aDA0kh...`
TXT	`facebook-domain-verification=mm5a3aemk4cv9yfjikcr4de2xn0ait`
TXT	`figma-domain-verification=8c0a9ebe2f3a594d9d85faed8994ef2b073a992b28ea6a3e9fa...`
TXT	`google-gws-recovery-domain-verification=57013633`
TXT	`google-site-verification=0pRbsGszBlAjZisxsJ2qJLXoXIKCdDlCSK_67hy5BjY`
TXT	`google-site-verification=1pIE7oxQFgbaSths1CckFlGEYBHxpp5pD9F_ZUCcSVA`
TXT	`google-site-verification=BAzjINWd55GJVC7I66cdi0SXSLENbMENU9tqByphDmQ`
TXT	`google-site-verification=BB5unuHbdt4pYsHrMorf_R-mKcUdy5Bk2vvz0Ie_q44`
TXT	`google-site-verification=H0SayPMoRT_4rzjNrg2YvbxiRvQbqSTlwSM0D0wht8U`
TXT	`google-site-verification=M2VbalsxRQjMfelTnHdpgHIeqOKE6CYWnhj6VbGMFH8`
TXT	`google-site-verification=dqlGjeLuQLofS51hgFB6ptoJWM0EkcPoe7G1gmL9muw`
TXT	`google-site-verification=vIdZhswzF-KMQmIllHFhS6VnmeHUvsCKTccrXjab-Lw`
TXT	`google-site-verification=wkpord_VFYRlAcjf2hV21FHnsScCpA9YiMOQqACXsvQ`
TXT	`openai-domain-verification=dv-RFgs6gJx1YSwFBosC1y2RA1n`
TXT	`segment-site-verification=NJFFQLAhEEX3Uyz0vgrzNf3fplm6iYsg`
TXT	`v=DKIM1; p=`
TXT	`v=spf1 include:customeriomail.com include:mail.zendesk.com include:_spf.googl...`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.17.183.120, 104.17.184.120
		IPv6 hints	2606:4700::6811:b778, 2606:4700::6811:b878
SOA	`arnold.ns.cloudflare.com`dns@cloudflare.com serial=2411132416

`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=1785821237

rank #1775 globally
rank #947 in the tld
WOT: SAFE (94/100)
📈 Tranco rank: #5,521

Subdomains

static-assets.codecademy.com

cdn.codecademy.com

privacy.codecademy.com

api.codecademy.com

author-staging.codecademy.com

link.codecademy.com

community.codecademy.com

shop.codecademy.com

help.codecademy.com

mail.codecademy.com

content.codecademy.com

try.codecademy.com

careers.codecademy.com

blog.codecademy.com

external-production.codecademy.com

staging.codecademy.com

ready.codecademy.com

www.codecademy.com

Same first word

codecademy.cn

codecademy.co

codecademy.com

codecademy.org

codecademy.ro

codecademy.herokuapp.com

codecademy.se

codecademy.ru

codecademy.sg

codecademy.xyz

codecademy.cloud

codecademy.de

codecademy.com.mx

codecademy.net

codecademy.it

codecademy.cl

Similar names

codecadmey.com

codeacdemy.com

cadecomedy.com

coedcademy.com

DNS History

91 records (7 active, 84 former)

●NSarnold.ns.cloudflare.com2017-12-28 → 2026-08-04 · 3 obs

○ 2017-11-30 15:46:48
● 2017-12-28 15:51:08
● 2026-08-04 05:38:46

○NSns-1139.awsdns-14.org2015-08-20 → 2017-11-30 · 4 obs

● 2015-08-20 18:40:44
● 2017-11-30 15:46:48
○ 2017-12-28 15:51:08
○ 2026-08-04 05:38:46

○NSns-158.awsdns-19.com2015-08-20 → 2017-11-30 · 4 obs

● 2015-08-20 18:40:44
● 2017-11-30 15:46:48
○ 2017-12-28 15:51:08
○ 2026-08-04 05:38:46

○NSns-1883.awsdns-43.co.uk2015-08-20 → 2017-11-30 · 4 obs

● 2015-08-20 18:40:44
● 2017-11-30 15:46:48
○ 2017-12-28 15:51:08
○ 2026-08-04 05:38:46

○NSns-999.awsdns-60.net2015-08-20 → 2017-11-30 · 4 obs

● 2015-08-20 18:40:44
● 2017-11-30 15:46:48
○ 2017-12-28 15:51:08
○ 2026-08-04 05:38:46

●NSserena.ns.cloudflare.com2017-12-28 → 2026-08-04 · 3 obs

○ 2017-11-30 15:46:48
● 2017-12-28 15:51:08
● 2026-08-04 05:38:46

○MXalt1.aspmx.l.google.com2015-08-20 → 2019-03-16 · 4 obs

● 2015-08-20 18:40:44
● 2019-03-16 11:10:20
○ 2019-04-18 21:16:10
○ 2026-08-04 05:38:46

○MXalt2.aspmx.l.google.com2015-08-20 → 2019-03-16 · 4 obs

● 2015-08-20 18:40:44
● 2019-03-16 11:10:20
○ 2019-04-18 21:16:10
○ 2026-08-04 05:38:46

○MXalt3.aspmx.l.google.com2016-02-23 → 2019-03-16 · 5 obs

○ 2016-02-01 19:54:36
● 2016-02-23 14:07:48
● 2019-03-16 11:10:20
○ 2019-04-18 21:16:10
○ 2026-08-04 05:38:46

○MXalt4.aspmx.l.google.com2016-02-23 → 2019-03-16 · 5 obs

○ 2016-02-01 19:54:36
● 2016-02-23 14:07:48
● 2019-03-16 11:10:20
○ 2019-04-18 21:16:10
○ 2026-08-04 05:38:46

○MXaspmx.l.google.com2015-08-20 → 2019-03-16 · 4 obs

● 2015-08-20 18:40:44
● 2019-03-16 11:10:20
○ 2019-04-18 21:16:10
○ 2026-08-04 05:38:46

○MXaspmx2.googlemail.com2015-08-20 → 2016-02-01 · 4 obs

● 2015-08-20 18:40:44
● 2016-02-01 19:54:36
○ 2016-02-23 14:07:48
○ 2026-08-04 05:38:46

○MXaspmx3.googlemail.com2015-08-20 → 2016-02-01 · 4 obs

● 2015-08-20 18:40:44
● 2016-02-01 19:54:36
○ 2016-02-23 14:07:48
○ 2026-08-04 05:38:46

○MXaspmx4.googlemail.com2015-08-20 → 2016-02-01 · 4 obs

● 2015-08-20 18:40:44
● 2016-02-01 19:54:36
○ 2016-02-23 14:07:48
○ 2026-08-04 05:38:46

○MXaspmx5.googlemail.com2015-08-20 → 2016-02-01 · 4 obs

● 2015-08-20 18:40:44
● 2016-02-01 19:54:36
○ 2016-02-23 14:07:48
○ 2026-08-04 05:38:46

●MXcodecademy-com.mail.protection.outlook.com2026-02-15 → 2026-08-04 · 3 obs

○ 2021-12-18 20:15:40
● 2026-02-15 14:06:44
● 2026-08-04 05:38:46

○MXmailstream-east.mxrecord.io2019-04-18 → 2021-12-18 · 5 obs

○ 2019-03-16 11:10:20
● 2019-04-18 21:16:10
● 2021-12-18 20:15:40
○ 2026-02-15 14:06:44
○ 2026-08-04 05:38:46

○MXmailstream-west.mxrecord.io2019-04-18 → 2021-12-18 · 5 obs

○ 2019-03-16 11:10:20
● 2019-04-18 21:16:10
● 2021-12-18 20:15:40
○ 2026-02-15 14:06:44
○ 2026-08-04 05:38:46

●A104.17.183.1202026-02-15 → 2026-08-04 · 3 obs

○ 2021-12-18 20:15:40
● 2026-02-15 14:06:44
● 2026-08-04 05:38:46

●A104.17.184.1202026-02-15 → 2026-08-04 · 3 obs

○ 2021-12-18 20:15:40
● 2026-02-15 14:06:44
● 2026-08-04 05:38:46

○A104.17.212.812021-01-27 → 2021-12-18 · 5 obs

○ 2019-04-18 21:16:10
● 2021-01-27 04:15:52
● 2021-12-18 20:15:40
○ 2026-02-15 14:06:44
○ 2026-08-04 05:38:46

○A104.18.199.632021-01-27 → 2021-12-18 · 5 obs

○ 2019-04-18 21:16:10
● 2021-01-27 04:15:52
● 2021-12-18 20:15:40
○ 2026-02-15 14:06:44
○ 2026-08-04 05:38:46

○A104.20.25.2502018-03-27 → 2019-04-18 · 5 obs

○ 2017-12-28 15:51:08
● 2018-03-27 21:33:46
● 2019-04-18 21:16:10
○ 2021-01-27 04:15:52
○ 2026-08-04 05:38:46

○A104.20.26.2502018-03-27 → 2019-04-18 · 5 obs

○ 2017-12-28 15:51:08
● 2018-03-27 21:33:46
● 2019-04-18 21:16:10
○ 2021-01-27 04:15:52
○ 2026-08-04 05:38:46

○A107.21.124.702017-12-28 → 2017-12-28 · 4 obs

○ 2017-11-30 15:46:48
● 2017-12-28 15:51:08
○ 2018-03-27 21:33:46
○ 2026-08-04 05:38:46

○A107.22.189.1192017-11-10 → 2017-11-30 · 5 obs

○ 2017-08-26 00:56:40
● 2017-11-10 04:17:52
● 2017-11-30 15:46:48
○ 2017-12-28 15:51:08
○ 2026-08-04 05:38:46

○A107.22.197.1902017-11-10 → 2017-12-28 · 5 obs

○ 2017-08-26 00:56:40
● 2017-11-10 04:17:52
● 2017-12-28 15:51:08
○ 2018-03-27 21:33:46
○ 2026-08-04 05:38:46

○A107.22.243.1932016-03-28 → 2016-03-28 · 4 obs

○ 2016-03-03 14:40:16
● 2016-03-28 16:52:28
○ 2016-04-17 12:23:56
○ 2026-08-04 05:38:46

○A107.22.246.1872016-03-28 → 2016-03-28 · 4 obs

○ 2016-03-03 14:40:16
● 2016-03-28 16:52:28
○ 2016-04-17 12:23:56
○ 2026-08-04 05:38:46

○A107.22.253.2442016-04-29 → 2016-05-13 · 5 obs

○ 2016-04-17 12:23:56
● 2016-04-29 08:28:42
● 2016-05-13 06:47:42
○ 2016-06-18 22:17:46
○ 2026-08-04 05:38:46

○A107.22.254.2142015-11-27 → 2015-12-03 · 5 obs

○ 2015-11-18 14:39:28
● 2015-11-27 19:24:20
● 2015-12-03 03:50:12
○ 2015-12-22 08:28:44
○ 2026-08-04 05:38:46

○A174.129.1.882016-12-19 → 2016-12-26 · 5 obs

○ 2016-12-09 06:27:18
● 2016-12-19 19:57:42
● 2016-12-26 14:25:52
○ 2017-02-05 01:59:28
○ 2026-08-04 05:38:46

○A174.129.193.2142016-09-13 → 2016-09-13 · 4 obs

○ 2016-09-06 20:26:22
● 2016-09-13 20:52:00
○ 2016-09-21 08:50:26
○ 2026-08-04 05:38:46

○A174.129.213.1562015-11-27 → 2015-12-03 · 5 obs

○ 2015-11-18 14:39:28
● 2015-11-27 19:24:20
● 2015-12-03 03:50:12
○ 2015-12-22 08:28:44
○ 2026-08-04 05:38:46

○A174.129.214.1032016-06-18 → 2016-08-30 · 5 obs

○ 2016-05-13 06:47:42
● 2016-06-18 22:17:46
● 2016-08-30 09:16:44
○ 2016-09-06 20:26:22
○ 2026-08-04 05:38:46

○A174.129.217.22015-11-11 → 2015-11-11 · 4 obs

○ 2015-10-31 17:03:10
● 2015-11-11 05:31:18
○ 2015-11-16 18:00:24
○ 2026-08-04 05:38:46

○A174.129.220.1182016-01-26 → 2016-02-01 · 5 obs

○ 2015-12-22 08:28:44
● 2016-01-26 11:27:50
● 2016-02-01 19:54:36
○ 2016-02-23 14:07:48
○ 2026-08-04 05:38:46

○A174.129.228.372015-11-16 → 2015-11-18 · 5 obs

○ 2015-11-11 05:31:18
● 2015-11-16 18:00:24
● 2015-11-18 14:39:28
○ 2015-11-27 19:24:20
○ 2026-08-04 05:38:46

○A174.129.32.1682017-02-11 → 2017-02-21 · 5 obs

○ 2017-02-05 01:59:28
● 2017-02-11 21:21:50
● 2017-02-21 03:00:02
○ 2017-05-05 03:04:42
○ 2026-08-04 05:38:46

○A184.72.216.2532015-08-20 → 2015-08-20 · 3 obs

● 2015-08-20 18:40:44
○ 2015-10-03 01:19:28
○ 2026-08-04 05:38:46

○A184.72.225.632016-09-13 → 2016-09-13 · 4 obs

○ 2016-09-06 20:26:22
● 2016-09-13 20:52:00
○ 2016-09-21 08:50:26
○ 2026-08-04 05:38:46

○A184.72.240.1962017-02-05 → 2017-02-05 · 4 obs

○ 2016-12-26 14:25:52
● 2017-02-05 01:59:28
○ 2017-02-11 21:21:50
○ 2026-08-04 05:38:46

○A184.72.254.802015-10-26 → 2015-10-29 · 5 obs

○ 2015-10-06 19:12:40
● 2015-10-26 20:10:56
● 2015-10-29 13:46:32
○ 2015-10-31 17:03:10
○ 2026-08-04 05:38:46

○A184.73.192.392015-10-03 → 2015-10-06 · 5 obs

○ 2015-08-20 18:40:44
● 2015-10-03 01:19:28
● 2015-10-06 19:12:40
○ 2015-10-26 20:10:56
○ 2026-08-04 05:38:46

○A184.73.211.302016-04-17 → 2016-04-17 · 4 obs

○ 2016-03-28 16:52:28
● 2016-04-17 12:23:56
○ 2016-04-29 08:28:42
○ 2026-08-04 05:38:46

○A184.73.242.1092016-04-17 → 2016-04-17 · 4 obs

○ 2016-03-28 16:52:28
● 2016-04-17 12:23:56
○ 2016-04-29 08:28:42
○ 2026-08-04 05:38:46

○A184.73.245.412016-01-26 → 2016-02-01 · 5 obs

○ 2015-12-22 08:28:44
● 2016-01-26 11:27:50
● 2016-02-01 19:54:36
○ 2016-02-23 14:07:48
○ 2026-08-04 05:38:46

○A184.73.249.642017-05-05 → 2017-05-05 · 4 obs

○ 2017-02-21 03:00:02
● 2017-05-05 03:04:42
○ 2017-05-15 14:45:30
○ 2026-08-04 05:38:46

○A184.73.251.2102016-11-01 → 2016-11-01 · 4 obs

○ 2016-10-08 08:03:46
● 2016-11-01 08:48:40
○ 2016-11-21 10:33:26
○ 2026-08-04 05:38:46

○A184.73.253.2482015-10-31 → 2015-10-31 · 4 obs

○ 2015-10-29 13:46:32
● 2015-10-31 17:03:10
○ 2015-11-11 05:31:18
○ 2026-08-04 05:38:46

○A184.73.255.72016-02-23 → 2016-03-03 · 5 obs

○ 2016-02-01 19:54:36
● 2016-02-23 14:07:48
● 2016-03-03 14:40:16
○ 2016-03-28 16:52:28
○ 2026-08-04 05:38:46

○A204.236.228.1932015-11-16 → 2015-11-18 · 5 obs

○ 2015-11-11 05:31:18
● 2015-11-16 18:00:24
● 2015-11-18 14:39:28
○ 2015-11-27 19:24:20
○ 2026-08-04 05:38:46

○A23.21.103.172017-05-15 → 2017-06-03 · 5 obs

○ 2017-05-05 03:04:42
● 2017-05-15 14:45:30
● 2017-06-03 02:31:30
○ 2017-06-10 14:54:02
○ 2026-08-04 05:38:46

○A23.21.109.962015-12-22 → 2015-12-22 · 4 obs

○ 2015-12-03 03:50:12
● 2015-12-22 08:28:44
○ 2016-01-26 11:27:50
○ 2026-08-04 05:38:46

○A23.21.118.1472017-06-10 → 2017-08-26 · 5 obs

○ 2017-06-03 02:31:30
● 2017-06-10 14:54:02
● 2017-08-26 00:56:40
○ 2017-11-10 04:17:52
○ 2026-08-04 05:38:46

○A23.21.140.412016-09-30 → 2016-09-30 · 4 obs

○ 2016-09-21 08:50:26
● 2016-09-30 04:59:32
○ 2016-10-08 08:03:46
○ 2026-08-04 05:38:46

○A23.21.145.1922016-12-09 → 2016-12-09 · 4 obs

○ 2016-11-30 05:38:16
● 2016-12-09 06:27:18
○ 2016-12-19 19:57:42
○ 2026-08-04 05:38:46

○A23.21.154.1882017-02-05 → 2017-02-05 · 4 obs

○ 2016-12-26 14:25:52
● 2017-02-05 01:59:28
○ 2017-02-11 21:21:50
○ 2026-08-04 05:38:46

○A23.21.156.2352016-09-30 → 2016-09-30 · 4 obs

○ 2016-09-21 08:50:26
● 2016-09-30 04:59:32
○ 2016-10-08 08:03:46
○ 2026-08-04 05:38:46

○A23.21.180.1902015-10-26 → 2015-10-29 · 5 obs

○ 2015-10-06 19:12:40
● 2015-10-26 20:10:56
● 2015-10-29 13:46:32
○ 2015-10-31 17:03:10
○ 2026-08-04 05:38:46

○A23.21.183.2002017-02-11 → 2017-02-21 · 5 obs

○ 2017-02-05 01:59:28
● 2017-02-11 21:21:50
● 2017-02-21 03:00:02
○ 2017-05-05 03:04:42
○ 2026-08-04 05:38:46

○A23.21.188.02016-09-06 → 2016-09-06 · 4 obs

○ 2016-08-30 09:16:44
● 2016-09-06 20:26:22
○ 2016-09-13 20:52:00
○ 2026-08-04 05:38:46

○A23.21.192.902016-04-29 → 2016-05-13 · 5 obs

○ 2016-04-17 12:23:56
● 2016-04-29 08:28:42
● 2016-05-13 06:47:42
○ 2016-06-18 22:17:46
○ 2026-08-04 05:38:46

○A23.21.205.1342016-11-30 → 2016-11-30 · 4 obs

○ 2016-11-21 10:33:26
● 2016-11-30 05:38:16
○ 2016-12-09 06:27:18
○ 2026-08-04 05:38:46

○A23.21.233.1992017-06-10 → 2017-08-26 · 5 obs

○ 2017-06-03 02:31:30
● 2017-06-10 14:54:02
● 2017-08-26 00:56:40
○ 2017-11-10 04:17:52
○ 2026-08-04 05:38:46

○A23.21.47.212016-06-18 → 2016-09-06 · 5 obs

○ 2016-05-13 06:47:42
● 2016-06-18 22:17:46
● 2016-09-06 20:26:22
○ 2016-09-13 20:52:00
○ 2026-08-04 05:38:46

○A23.21.79.232015-10-03 → 2015-10-06 · 5 obs

○ 2015-08-20 18:40:44
● 2015-10-03 01:19:28
● 2015-10-06 19:12:40
○ 2015-10-26 20:10:56
○ 2026-08-04 05:38:46

○A23.23.104.872016-02-23 → 2016-03-03 · 5 obs

○ 2016-02-01 19:54:36
● 2016-02-23 14:07:48
● 2016-03-03 14:40:16
○ 2016-03-28 16:52:28
○ 2026-08-04 05:38:46

○A23.23.105.2382015-08-20 → 2015-08-20 · 3 obs

● 2015-08-20 18:40:44
○ 2015-10-03 01:19:28
○ 2026-08-04 05:38:46

○A23.23.110.2212016-12-19 → 2016-12-26 · 5 obs

○ 2016-12-09 06:27:18
● 2016-12-19 19:57:42
● 2016-12-26 14:25:52
○ 2017-02-05 01:59:28
○ 2026-08-04 05:38:46

○A23.23.117.2252015-10-31 → 2015-10-31 · 4 obs

○ 2015-10-29 13:46:32
● 2015-10-31 17:03:10
○ 2015-11-11 05:31:18
○ 2026-08-04 05:38:46

○A23.23.140.892015-11-11 → 2015-11-11 · 4 obs

○ 2015-10-31 17:03:10
● 2015-11-11 05:31:18
○ 2015-11-16 18:00:24
○ 2026-08-04 05:38:46

○A23.23.169.1502016-09-21 → 2016-11-21 · 7 obs

○ 2016-09-13 20:52:00
● 2016-09-21 08:50:26
○ 2016-09-30 04:59:32
● 2016-10-08 08:03:46
● 2016-11-21 10:33:26
○ 2016-11-30 05:38:16
○ 2026-08-04 05:38:46

○A2400:cb00:2048:1::6814:19fa2018-03-27 → 2018-03-27 · 4 obs

○ 2017-12-28 15:51:08
● 2018-03-27 21:33:46
○ 2019-02-13 18:56:46
○ 2026-08-04 05:38:46

○A2400:cb00:2048:1::6814:1afa2018-03-27 → 2018-03-27 · 4 obs

○ 2017-12-28 15:51:08
● 2018-03-27 21:33:46
○ 2019-02-13 18:56:46
○ 2026-08-04 05:38:46

○A2406:da00:ff00::6b15:7c462017-12-28 → 2017-12-28 · 4 obs

○ 2017-11-30 15:46:48
● 2017-12-28 15:51:08
○ 2018-03-27 21:33:46
○ 2026-08-04 05:38:46

○A2406:da00:ff00::6b16:c5be2017-12-28 → 2017-12-28 · 4 obs

○ 2017-11-30 15:46:48
● 2017-12-28 15:51:08
○ 2018-03-27 21:33:46
○ 2026-08-04 05:38:46

●A2606:4700::6811:b7782026-02-15 → 2026-08-04 · 3 obs

○ 2021-12-18 20:15:40
● 2026-02-15 14:06:44
● 2026-08-04 05:38:46

●A2606:4700::6811:b8782026-02-15 → 2026-08-04 · 3 obs

○ 2021-12-18 20:15:40
● 2026-02-15 14:06:44
● 2026-08-04 05:38:46

○A2606:4700::6811:d4512021-01-27 → 2021-12-18 · 5 obs

○ 2019-04-18 21:16:10
● 2021-01-27 04:15:52
● 2021-12-18 20:15:40
○ 2026-02-15 14:06:44
○ 2026-08-04 05:38:46

○A2606:4700::6812:c73f2021-01-27 → 2021-12-18 · 5 obs

○ 2019-04-18 21:16:10
● 2021-01-27 04:15:52
● 2021-12-18 20:15:40
○ 2026-02-15 14:06:44
○ 2026-08-04 05:38:46

○A2606:4700:10::6814:19fa2019-02-13 → 2019-04-18 · 5 obs

○ 2018-03-27 21:33:46
● 2019-02-13 18:56:46
● 2019-04-18 21:16:10
○ 2021-01-27 04:15:52
○ 2026-08-04 05:38:46

○A2606:4700:10::6814:1afa2019-02-13 → 2019-04-18 · 5 obs

○ 2018-03-27 21:33:46
● 2019-02-13 18:56:46
● 2019-04-18 21:16:10
○ 2021-01-27 04:15:52
○ 2026-08-04 05:38:46

○A50.16.221.12016-11-30 → 2016-11-30 · 4 obs

○ 2016-11-21 10:33:26
● 2016-11-30 05:38:16
○ 2016-12-09 06:27:18
○ 2026-08-04 05:38:46

○A50.16.232.1942017-05-15 → 2017-06-03 · 5 obs

○ 2017-05-05 03:04:42
● 2017-05-15 14:45:30
● 2017-06-03 02:31:30
○ 2017-06-10 14:54:02
○ 2026-08-04 05:38:46

○A50.17.185.1702015-12-22 → 2015-12-22 · 4 obs

○ 2015-12-03 03:50:12
● 2015-12-22 08:28:44
○ 2016-01-26 11:27:50
○ 2026-08-04 05:38:46

○A50.17.191.222016-11-21 → 2016-12-09 · 6 obs

○ 2016-11-01 08:48:40
● 2016-11-21 10:33:26
○ 2016-11-30 05:38:16
● 2016-12-09 06:27:18
○ 2016-12-19 19:57:42
○ 2026-08-04 05:38:46

○A50.17.203.1272016-09-21 → 2016-10-08 · 6 obs

○ 2016-09-13 20:52:00
● 2016-09-21 08:50:26
○ 2016-09-30 04:59:32
● 2016-10-08 08:03:46
○ 2016-11-01 08:48:40
○ 2026-08-04 05:38:46

○A50.17.222.2022017-05-05 → 2017-05-05 · 4 obs

○ 2017-02-21 03:00:02
● 2017-05-05 03:04:42
○ 2017-05-15 14:45:30
○ 2026-08-04 05:38:46

○A50.17.243.1292017-02-05 → 2017-02-21 · 5 obs

○ 2016-12-26 14:25:52
● 2017-02-05 01:59:28
● 2017-02-21 03:00:02
○ 2017-05-05 03:04:42
○ 2026-08-04 05:38:46

○A50.19.230.2262017-02-05 → 2017-02-21 · 5 obs

○ 2016-12-26 14:25:52
● 2017-02-05 01:59:28
● 2017-02-21 03:00:02
○ 2017-05-05 03:04:42
○ 2026-08-04 05:38:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net...	-
codecademy.com	arnold.ns.cloudflare.com, serena.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.220

NS records: arnold.ns.cloudflare.com, serena.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codecademy.com (unsigned zone)

⏱️ Timing

Total: 451ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.17.183.120, 104.17.184.120`
AAAA	2	`2606:4700::6811:b778, 2606:4700::6811:b878`
NS	2	`arnold.ns.cloudflare.com, serena.ns.cloudflare.com`
MX	1	`codecademy-com.mail.protection.outlook.c`
TXT	21	`MS=79764F463C8CD2E367B5BF7B1DF1B1C9FFE48, MS=ms80117904...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`arnold.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The host names static-assets.codecademy.com, cdn.codecademy.com, privacy.codecademy.com, api.codecademy.com and author-staging.codecademy.com — among a few others — fall under the parent domain codecademy.com.

IP Addresses

codecademy.com points to the four IP addresses 104.17.183.120, 104.17.184.120, 2606:4700::6811:b778 and 2606:4700::6811:b878.

Among the host names that share IP numbers with codecademy.com are ready.codecademy.com, www.codecademy.com, otel-rum.production-eks.codecademy.com and two others.

Name Servers

The NS records for codecademy.com delegate to arnold.ns.cloudflare.com and serena.ns.cloudflare.com.

codecademy.com has the same name server delegation as a number of other domains, such as minglecms.io, 4.sv, doctypedigital.ie and two more.

At least some of codecademy.com's name servers are shared with other domains, for example fairplaypadelclub.com, aureliadream.com, reliablecontracting.com and two more.

These name servers tend to be deployed in combination with the name servers zoe.ns.cloudflare.com and carioca.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

arnold.ns.cloudflare.com maps to 108.162.193.69, 172.64.33.69, 173.245.59.69 and 3 additional IP addresses.

serena.ns.cloudflare.com maps to 108.162.192.220, 172.64.32.220, 173.245.58.220 and 3 additional IP addresses.

Mail Servers

codecademy.com routes its mail through a single mail server, codecademy-com.mail.protection.outlook.com.

codecademy-com.mail.protection.outlook.com directs to 8 IP numbers, including 40.93.192.4, 52.101.9.24 and 52.101.41.6, along with 5 other.