codingforinterviews.com - dns.ninja

`codingforinterviews.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:20a9^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:9914^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.32.169^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.153.20^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`pat.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a8b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c08b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`pat.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:208b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`pat.ns.cloudflare.com`
		A	108.162.192.139^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
		A	172.64.32.139^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
		A	173.245.58.139^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pat.ns.cloudflare.com`
NS	`will.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b95^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`will.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c195^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`will.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2195^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`will.ns.cloudflare.com`
		A	108.162.193.149^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`will.ns.cloudflare.com`
		A	172.64.33.149^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`will.ns.cloudflare.com`
		A	173.245.59.149^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`will.ns.cloudflare.com`
MX	`mx1.sub3.homie.mail.dreamhost.com` ⭐
		A	64.90.62.163^{🇺🇸 AS2634764.90.32.0/19 New Dream Network, LLC 417 Associated Rd. PMB 257 Brea, CA 92821 UNITED STATES}
			PTR	`fltr-in1.mail.dreamhost.com`
MX	`mx2.sub3.homie.mail.dreamhost.com` ⭐
		A	64.90.62.164^{🇺🇸 AS2634764.90.32.0/19 New Dream Network, LLC 417 Associated Rd. PMB 257 Brea, CA 92821 UNITED STATES}
			PTR	`fltr-in2.mail.dreamhost.com`
TXT	`v=spf1 include:spf.mandrillapp.com ?all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.32.169, 172.67.153.20
		IPv6 hints	2606:4700:3031::6815:20a9, 2606:4700:3036::ac43:9914
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=205, name=cloudflare-ech.com
SOA	`pat.ns.cloudflare.com`dns@cloudflare.com serial=2410953365

`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=1786210634

Subdomains

www.codingforinterviews.com

Same first word

codingforinterviews.com

DNS History

18 records (8 active, 10 former)

●NSpat.ns.cloudflare.com2015-08-19 → 2026-08-08 · 2 obs

● 2015-08-19 09:28:56
● 2026-08-08 17:44:20

●NSwill.ns.cloudflare.com2015-08-19 → 2026-08-08 · 2 obs

● 2015-08-19 09:28:56
● 2026-08-08 17:44:20

●MXmx1.sub3.homie.mail.dreamhost.com2015-08-19 → 2026-08-08 · 2 obs

● 2015-08-19 09:28:56
● 2026-08-08 17:44:20

●MXmx2.sub3.homie.mail.dreamhost.com2015-08-19 → 2026-08-08 · 2 obs

● 2015-08-19 09:28:56
● 2026-08-08 17:44:20

○A104.18.38.2092015-08-19 → 2017-01-03 · 4 obs

● 2015-08-19 09:28:56
● 2017-01-03 09:01:50
○ 2026-02-28 17:23:40
○ 2026-08-08 17:44:20

○A104.18.39.2092015-08-19 → 2017-01-03 · 4 obs

● 2015-08-19 09:28:56
● 2017-01-03 09:01:50
○ 2026-02-28 17:23:40
○ 2026-08-08 17:44:20

●A104.21.32.1692026-02-28 → 2026-08-08 · 54 obs

○ 2017-01-03 09:01:50
● 2026-02-28 17:23:40
○ 2026-03-05 06:47:20
○ 2026-03-21 02:37:34
● 2026-03-22 04:38:52
○ 2026-03-23 13:56:00
○ 2026-03-26 03:55:04
● 2026-03-27 13:59:38
○ 2026-03-27 17:14:44
○ 2026-03-28 02:38:22
● 2026-03-28 17:31:12
● 2026-03-28 18:40:54
○ 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
● 2026-05-29 18:41:58
○ 2026-05-30 05:17:44
● 2026-05-31 12:30:38
○ 2026-06-02 01:22:36
○ 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
● 2026-07-01 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
● 2026-07-15 11:49:18
○ 2026-07-16 10:46:40
● 2026-07-18 15:29:30
○ 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
● 2026-08-03 07:45:16
○ 2026-08-07 06:40:56
● 2026-08-08 00:08:24
● 2026-08-08 17:44:20

●A172.67.153.202026-02-28 → 2026-08-08 · 54 obs

○A188.114.96.02026-03-05 → 2026-08-07 · 53 obs

○ 2026-02-28 17:23:40
● 2026-03-05 06:47:20
● 2026-03-21 02:37:34
○ 2026-03-22 04:38:52
● 2026-03-23 13:56:00
● 2026-03-26 03:55:04
○ 2026-03-27 13:59:38
● 2026-03-27 17:14:44
● 2026-03-28 02:38:22
○ 2026-03-28 17:31:12
○ 2026-03-28 18:40:54
● 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
○ 2026-05-29 18:41:58
● 2026-05-30 05:17:44
○ 2026-05-31 12:30:38
● 2026-06-02 01:22:36
● 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
○ 2026-07-01 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
○ 2026-07-15 11:49:18
● 2026-07-16 10:46:40
○ 2026-07-18 15:29:30
● 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
○ 2026-08-03 07:45:16
● 2026-08-07 06:40:56
○ 2026-08-08 00:08:24
○ 2026-08-08 17:44:20

○A188.114.97.02026-03-05 → 2026-08-07 · 53 obs

○A2400:cb00:2048:1::6812:26d12015-08-19 → 2017-01-03 · 4 obs

● 2015-08-19 09:28:56
● 2017-01-03 09:01:50
○ 2026-02-28 17:23:40
○ 2026-08-08 17:44:20

○A2400:cb00:2048:1::6812:27d12015-08-19 → 2017-01-03 · 4 obs

● 2015-08-19 09:28:56
● 2017-01-03 09:01:50
○ 2026-02-28 17:23:40
○ 2026-08-08 17:44:20

●A2606:4700:3031::6815:20a92026-07-01 → 2026-08-08 · 25 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
○ 2026-07-14 11:23:38
● 2026-07-15 11:49:18
○ 2026-07-16 10:46:40
● 2026-07-18 15:29:30
○ 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
● 2026-08-03 07:45:16
○ 2026-08-07 06:40:56
● 2026-08-08 00:08:24
● 2026-08-08 17:44:20

○A2606:4700:3034::6815:20a92026-02-28 → 2026-06-20 · 31 obs

○A2606:4700:3035::ac43:99142026-02-28 → 2026-06-20 · 31 obs

●A2606:4700:3036::ac43:99142026-07-01 → 2026-08-08 · 25 obs

○A2a06:98c1:3120::2026-03-05 → 2026-08-07 · 53 obs

○A2a06:98c1:3121::2026-03-05 → 2026-08-07 · 53 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...	-
codingforinterviews.com	pat.ns.cloudflare.com, will.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.139

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: 1777ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.32.169, 172.67.153.20`
AAAA	2	`2606:4700:3036::ac43:9914, 2606:4700:3031::6815:20a9`
NS	2	`pat.ns.cloudflare.com, will.ns.cloudflare.com`
MX	2	`mx1.sub3.homie.mail.dreamhost.com (pri: , mx2.sub3.homie.mail.dreamhost.com (pri:`
TXT	1	`v=spf1 include:spf.mandrillapp.com ?all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`pat.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

www.codingforinterviews.com is a subdomain of codingforinterviews.com.

IP Addresses

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

geloraverse.com, argeaku.com, mx.sorelleperego.com and two other host names share IP numbers with codingforinterviews.com.

Name Servers

Two name servers handle the delegation for codingforinterviews.com: pat.ns.cloudflare.com and will.ns.cloudflare.com.

codingforinterviews.com uses the same name servers as several other domains — among them warveterans.be, veterans.be, skrobonjafinancialgroup.com and two more.

The name servers of codingforinterviews.com overlap at least partially with those of other domains — among them quicksite.asia, solartechmexico.com, 733x.net and two more.

These name servers commonly appear in combination with the name servers dawn.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

pat.ns.cloudflare.com resolves to 108.162.192.139, 172.64.32.139 and 173.245.58.139 among others, with 3 other IP addresses in total.

will.ns.cloudflare.com resolves to 108.162.193.149, 172.64.33.149 and 173.245.59.149 among others, with 3 other IP addresses in total.

Mail Servers

Mail for codingforinterviews.com is handled by two mail servers — mx1.sub3.homie.mail.dreamhost.com and mx2.sub3.homie.mail.dreamhost.com.

codingforinterviews.com uses an identical mail server configuration to several other domains — among them c-cr.it, spiritlinks.org, lataupiniere.com and two more.

codingforinterviews.com has at least partial mail server overlap with other domains such as renlogik.com, store.vinylpulse.com, kimgordon.net and two more.

The mail servers mx1.dreamhost.com and mx2.dreamhost.com are commonly paired with these mail servers.

Both mx1.sub3.homie.mail.dreamhost.com and mx2.sub3.homie.mail.dreamhost.com have a single IP address each — mx1.sub3.homie.mail.dreamhost.com resolves to 64.90.62.163 while mx2.sub3.homie.mail.dreamhost.com resolves to 64.90.62.164.