www.codingforinterviews.com - dns.ninja

www.codingforinterviews.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:20a9🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:9914🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.32.169Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.153.20🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.32.169, 172.67.153.20
IPv6 hints2606:4700:3031::6815:20a9, 2606:4700:3036::ac43:9914
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=163, name=cloudflare-ech.com

codingforinterviews.com

DNSSEC⚠️ Not signed
A2606:4700:3031::6815:20a9🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::ac43:9914🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.32.169Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.153.20🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSpat.ns.cloudflare.com ⭐
NSwill.ns.cloudflare.com
MXmx1.sub3.homie.mail.dreamhost.com ⭐
MXmx2.sub3.homie.mail.dreamhost.com ⭐
TXTv=spf1 include:spf.mandrillapp.com ?all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.32.169, 172.67.153.20
IPv6 hints2606:4700:3031::6815:20a9, 2606:4700:3036::ac43:9914
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=163, name=cloudflare-ech.com
SOApat.ns.cloudflare.comdns@cloudflare.com serial=2410953365

Same first word

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www.uk.net
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www.sadist.jp
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DNS History

14 records (4 active, 10 former)

2017201820192020202120222023202420252026A104.21.32.169172.67.153.202606:4700:3031::6815:20a92606:4700:3036::ac43:9914104.18.38.209104.18.39.209188.114.96.0188.114.97.02400:cb00:2048:1::6812:26d12400:cb00:2048:1::6812:27d12606:4700:3034::6815:20a92606:4700:3035::ac43:99142a06:98c1:3120::2a06:98c1:3121::
○A104.18.38.2092016-12-28 → 2017-12-03 · 4 obs
● 2016-12-28 19:42:34
● 2017-12-03 20:27:12
○ 2026-02-28 17:23:40
○ 2026-08-09 02:39:34
○A104.18.39.2092016-12-28 → 2017-12-03 · 4 obs
● 2016-12-28 19:42:34
● 2017-12-03 20:27:12
○ 2026-02-28 17:23:40
○ 2026-08-09 02:39:34
●A104.21.32.1692026-02-28 → 2026-08-09 · 44 obs
○ 2017-12-03 20:27:12
● 2026-02-28 17:23:40
○ 2026-03-05 06:47:20
○ 2026-03-29 17:12:14
● 2026-03-29 20:10:50
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○ 2026-08-08 18:34:52
● 2026-08-09 02:39:34
●A172.67.153.202026-02-28 → 2026-08-09 · 44 obs
○ 2017-12-03 20:27:12
● 2026-02-28 17:23:40
○ 2026-03-05 06:47:20
○ 2026-03-29 17:12:14
● 2026-03-29 20:10:50
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○ 2026-08-08 18:34:52
● 2026-08-09 02:39:34
○A188.114.96.02026-03-05 → 2026-08-08 · 43 obs
○ 2026-02-28 17:23:40
● 2026-03-05 06:47:20
● 2026-03-29 17:12:14
○ 2026-03-29 20:10:50
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○ 2026-08-09 02:39:34
○A188.114.97.02026-03-05 → 2026-08-08 · 43 obs
○ 2026-02-28 17:23:40
● 2026-03-05 06:47:20
● 2026-03-29 17:12:14
○ 2026-03-29 20:10:50
● 2026-03-31 19:34:12
● 2026-04-01 01:34:02
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● 2026-04-02 03:38:22
● 2026-05-28 20:05:38
○ 2026-05-29 08:49:40
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○ 2026-05-31 12:30:38
● 2026-06-02 01:22:36
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○ 2026-06-05 16:36:34
○ 2026-06-05 20:58:38
● 2026-06-09 17:11:24
○ 2026-06-20 20:57:48
● 2026-06-20 23:09:14
○ 2026-07-01 19:09:16
● 2026-07-02 08:39:14
○ 2026-07-10 03:45:32
● 2026-07-11 04:16:40
○ 2026-07-12 18:36:36
● 2026-07-13 14:23:52
○ 2026-07-14 04:40:54
● 2026-07-14 11:23:38
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● 2026-07-19 02:25:14
○ 2026-07-20 14:36:30
● 2026-07-21 02:46:52
○ 2026-07-21 23:49:04
● 2026-07-22 13:45:00
○ 2026-07-30 08:36:46
● 2026-07-30 12:12:54
○ 2026-08-01 22:22:44
● 2026-08-02 09:00:24
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● 2026-08-07 06:40:56
○ 2026-08-08 00:08:24
● 2026-08-08 18:34:52
○ 2026-08-09 02:39:34
○A2400:cb00:2048:1::6812:26d12016-12-28 → 2017-12-03 · 4 obs
● 2016-12-28 19:42:34
● 2017-12-03 20:27:12
○ 2026-02-28 17:23:40
○ 2026-08-09 02:39:34
○A2400:cb00:2048:1::6812:27d12016-12-28 → 2017-12-03 · 4 obs
● 2016-12-28 19:42:34
● 2017-12-03 20:27:12
○ 2026-02-28 17:23:40
○ 2026-08-09 02:39:34
●A2606:4700:3031::6815:20a92026-07-01 → 2026-08-09 · 24 obs
○ 2026-06-20 23:09:14
● 2026-07-01 19:09:16
○ 2026-07-02 08:39:14
● 2026-07-10 03:45:32
○ 2026-07-11 04:16:40
● 2026-07-12 18:36:36
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○ 2026-08-08 18:34:52
● 2026-08-09 02:39:34
○A2606:4700:3034::6815:20a92026-02-28 → 2026-06-20 · 22 obs
○ 2017-12-03 20:27:12
● 2026-02-28 17:23:40
○ 2026-03-05 06:47:20
○ 2026-03-29 17:12:14
● 2026-03-29 20:10:50
○ 2026-03-31 19:34:12
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● 2026-04-01 07:39:24
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○ 2026-05-28 20:05:38
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● 2026-05-31 12:30:38
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○ 2026-06-05 10:34:12
● 2026-06-05 16:36:34
● 2026-06-05 20:58:38
○ 2026-06-09 17:11:24
● 2026-06-20 20:57:48
○ 2026-06-20 23:09:14
○ 2026-08-09 02:39:34
○A2606:4700:3035::ac43:99142026-02-28 → 2026-06-20 · 22 obs
○ 2017-12-03 20:27:12
● 2026-02-28 17:23:40
○ 2026-03-05 06:47:20
○ 2026-03-29 17:12:14
● 2026-03-29 20:10:50
○ 2026-03-31 19:34:12
○ 2026-04-01 01:34:02
● 2026-04-01 07:39:24
○ 2026-04-02 03:38:22
○ 2026-05-28 20:05:38
● 2026-05-29 08:49:40
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○ 2026-06-02 01:22:36
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● 2026-06-05 20:58:38
○ 2026-06-09 17:11:24
● 2026-06-20 20:57:48
○ 2026-06-20 23:09:14
○ 2026-08-09 02:39:34
●A2606:4700:3036::ac43:99142026-07-01 → 2026-08-09 · 24 obs
○ 2026-06-20 23:09:14
● 2026-07-01 19:09:16
○ 2026-07-02 08:39:14
● 2026-07-10 03:45:32
○ 2026-07-11 04:16:40
● 2026-07-12 18:36:36
○ 2026-07-13 14:23:52
● 2026-07-14 04:40:54
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● 2026-07-18 15:29:30
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● 2026-08-08 00:08:24
○ 2026-08-08 18:34:52
● 2026-08-09 02:39:34
○A2a06:98c1:3120::2026-03-05 → 2026-08-08 · 43 obs
○ 2026-02-28 17:23:40
● 2026-03-05 06:47:20
● 2026-03-29 17:12:14
○ 2026-03-29 20:10:50
● 2026-03-31 19:34:12
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● 2026-08-08 18:34:52
○ 2026-08-09 02:39:34
○A2a06:98c1:3121::2026-03-05 → 2026-08-08 · 43 obs
○ 2026-02-28 17:23:40
● 2026-03-05 06:47:20
● 2026-03-29 17:12:14
○ 2026-03-29 20:10:50
● 2026-03-31 19:34:12
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● 2026-07-22 13:45:00
○ 2026-07-30 08:36:46
● 2026-07-30 12:12:54
○ 2026-08-01 22:22:44
● 2026-08-02 09:00:24
○ 2026-08-03 07:45:16
● 2026-08-07 06:40:56
○ 2026-08-08 00:08:24
● 2026-08-08 18:34:52
○ 2026-08-09 02:39:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
codingforinterviews.compat.ns.cloudflare.com, will.ns.cloudflare.com12 records

✅ Authoritative Response

Server:173.245.58.139

NS records: pat.ns.cloudflare.com, will.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for codingforinterviews.com (unsigned zone)

⏱️ Timing

Total: 105ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.153.20, 104.21.32.169
AAAA22606:4700:3031::6815:20a9, 2606:4700:3036::ac43:9914
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

www.codingforinterviews.com resolves to four IP addresses: 104.21.32.169, 172.67.153.20, 2606:4700:3031::6815:20a9 and 2606:4700:3036::ac43:9914.

Among the host names that share IP numbers with www.codingforinterviews.com are wcacleanenergy.org, legalaid.gov.ua, medigraf.mx and two others.