programmerinterview.com - dns.ninja

`programmerinterview.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:ca5d^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:2caf^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.44.175^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.93^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cruz.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a58^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cruz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c058^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cruz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2058^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cruz.ns.cloudflare.com`
		A	108.162.192.88^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cruz.ns.cloudflare.com`
		A	172.64.32.88^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cruz.ns.cloudflare.com`
		A	173.245.58.88^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cruz.ns.cloudflare.com`
NS	`jobs.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bb7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1b7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jobs.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21b7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jobs.ns.cloudflare.com`
		A	108.162.193.183^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	172.64.33.183^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
		A	173.245.59.183^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jobs.ns.cloudflare.com`
MX	`smtp.secureserver.net` ⭐
		A	216.69.141.71^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v01.prod.phx3.secureserver.net`
		A	216.69.141.84^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v01.prod.phx3.secureserver.net`
		A	216.69.141.113^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v01.prod.phx3.secureserver.net`
MX	`mailstore1.secureserver.net`⁽¹⁰⁾
		A	216.69.141.78^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp01-v02.prod.phx3.secureserver.net`
		A	216.69.141.114^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp03-v02.prod.phx3.secureserver.net`
		A	216.69.141.162^{🇺🇸 AS398101216.69.140.0/22}
			PTR	`osplibsmtp02-v02.prod.phx3.secureserver.net`
TXT	`ezoic-domain-verification=7ZUuTQ3qxpQtIzCGoU44vnPfWS8ATh`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.44.175, 172.67.202.93
		IPv6 hints	2606:4700:3032::ac43:ca5d, 2606:4700:3033::6815:2caf
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=28, name=cloudflare-ech.com
SOA	`cruz.ns.cloudflare.com`dns@cloudflare.com serial=2411336798

`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=1786221544

rank #659997 globally
rank #272130 in the tld
WOT: SAFE (92/100)

Previously MX for

programmerinterview.com

Same first word

programmerinterview.com

DNS History

40 records (8 active, 32 former)

○NSbella.ns.cloudflare.com2021-05-20 → 2021-05-20 · 4 obs

○ 2017-02-14 05:01:12
● 2021-05-20 09:00:20
○ 2026-02-15 18:40:46
○ 2026-08-08 21:03:18

●NScruz.ns.cloudflare.com2026-02-15 → 2026-08-08 · 3 obs

○ 2021-05-20 09:00:20
● 2026-02-15 18:40:46
● 2026-08-08 21:03:18

●NSjobs.ns.cloudflare.com2026-02-15 → 2026-08-08 · 3 obs

○ 2021-05-20 09:00:20
● 2026-02-15 18:40:46
● 2026-08-08 21:03:18

○NSns-1086.awsdns-07.org2015-10-16 → 2015-11-01 · 5 obs

○ 2015-05-24 08:26:22
● 2015-10-16 21:20:38
● 2015-11-01 21:07:30
○ 2016-01-21 07:58:02
○ 2026-08-08 21:03:18

○NSns-1412.awsdns-48.org2016-01-21 → 2016-06-18 · 5 obs

○ 2015-11-01 21:07:30
● 2016-01-21 07:58:02
● 2016-06-18 14:54:16
○ 2016-11-23 18:38:48
○ 2026-08-08 21:03:18

○NSns-1654.awsdns-14.co.uk2016-01-21 → 2016-06-18 · 5 obs

○ 2015-11-01 21:07:30
● 2016-01-21 07:58:02
● 2016-06-18 14:54:16
○ 2016-11-23 18:38:48
○ 2026-08-08 21:03:18

○NSns-1994.awsdns-57.co.uk2015-10-16 → 2015-11-01 · 5 obs

○ 2015-05-24 08:26:22
● 2015-10-16 21:20:38
● 2015-11-01 21:07:30
○ 2016-01-21 07:58:02
○ 2026-08-08 21:03:18

○NSns-214.awsdns-26.com2015-10-16 → 2015-11-01 · 5 obs

○ 2015-05-24 08:26:22
● 2015-10-16 21:20:38
● 2015-11-01 21:07:30
○ 2016-01-21 07:58:02
○ 2026-08-08 21:03:18

○NSns-358.awsdns-44.com2016-01-21 → 2016-06-18 · 5 obs

○ 2015-11-01 21:07:30
● 2016-01-21 07:58:02
● 2016-06-18 14:54:16
○ 2016-11-23 18:38:48
○ 2026-08-08 21:03:18

○NSns-643.awsdns-16.net2016-01-21 → 2016-06-18 · 5 obs

○ 2015-11-01 21:07:30
● 2016-01-21 07:58:02
● 2016-06-18 14:54:16
○ 2016-11-23 18:38:48
○ 2026-08-08 21:03:18

○NSns-866.awsdns-44.net2015-10-16 → 2015-11-01 · 5 obs

○ 2015-05-24 08:26:22
● 2015-10-16 21:20:38
● 2015-11-01 21:07:30
○ 2016-01-21 07:58:02
○ 2026-08-08 21:03:18

○NSns1.programmerinterview.com2015-05-24 → 2015-05-24 · 3 obs

● 2015-05-24 08:26:22
○ 2015-10-16 21:20:38
○ 2026-08-08 21:03:18

○NSns2.programmerinterview.com2015-05-24 → 2015-05-24 · 3 obs

● 2015-05-24 08:26:22
○ 2015-10-16 21:20:38
○ 2026-08-08 21:03:18

○NSns25.domaincontrol.com2016-11-23 → 2016-11-23 · 4 obs

○ 2016-06-18 14:54:16
● 2016-11-23 18:38:48
○ 2017-02-14 05:01:12
○ 2026-08-08 21:03:18

○NSns26.domaincontrol.com2016-11-23 → 2016-11-23 · 4 obs

○ 2016-06-18 14:54:16
● 2016-11-23 18:38:48
○ 2017-02-14 05:01:12
○ 2026-08-08 21:03:18

○NSpdns07.domaincontrol.com2017-02-14 → 2017-02-14 · 4 obs

○ 2016-11-23 18:38:48
● 2017-02-14 05:01:12
○ 2021-05-20 09:00:20
○ 2026-08-08 21:03:18

○NSpdns08.domaincontrol.com2017-02-14 → 2017-02-14 · 4 obs

○ 2016-11-23 18:38:48
● 2017-02-14 05:01:12
○ 2021-05-20 09:00:20
○ 2026-08-08 21:03:18

○NSthomas.ns.cloudflare.com2021-05-20 → 2021-05-20 · 4 obs

○ 2017-02-14 05:01:12
● 2021-05-20 09:00:20
○ 2026-02-15 18:40:46
○ 2026-08-08 21:03:18

○MX198.154.207.442015-11-01 → 2016-06-18 · 5 obs

○ 2015-10-16 21:20:38
● 2015-11-01 21:07:30
● 2016-06-18 14:54:16
○ 2016-11-23 18:38:48
○ 2026-08-08 21:03:18

●MXmailstore1.secureserver.net2016-11-23 → 2026-08-08 · 3 obs

○ 2016-06-18 14:54:16
● 2016-11-23 18:38:48
● 2026-08-08 21:03:18

○MXprogrammerinterview.com2015-05-24 → 2015-10-16 · 4 obs

● 2015-05-24 08:26:22
● 2015-10-16 21:20:38
○ 2015-11-01 21:07:30
○ 2026-08-08 21:03:18

●MXsmtp.secureserver.net2016-11-23 → 2026-08-08 · 3 obs

○ 2016-06-18 14:54:16
● 2016-11-23 18:38:48
● 2026-08-08 21:03:18

○A104.21.24.862021-05-20 → 2021-05-20 · 4 obs

○ 2017-02-14 05:01:12
● 2021-05-20 09:00:20
○ 2026-02-15 18:40:46
○ 2026-08-08 21:03:18

●A104.21.44.1752026-02-15 → 2026-08-08 · 10 obs

○ 2021-05-20 09:00:20
● 2026-02-15 18:40:46
● 2026-02-26 20:13:40
○ 2026-03-22 04:39:14
● 2026-04-14 20:01:54
○ 2026-04-16 22:25:24
● 2026-05-23 21:35:40
○ 2026-07-03 11:55:18
● 2026-07-14 21:38:26
● 2026-08-08 21:03:18

●A172.67.202.932026-02-15 → 2026-08-08 · 10 obs

○A172.67.218.212021-05-20 → 2021-05-20 · 4 obs

○ 2017-02-14 05:01:12
● 2021-05-20 09:00:20
○ 2026-02-15 18:40:46
○ 2026-08-08 21:03:18

○A188.114.96.02026-03-22 → 2026-07-03 · 8 obs

○ 2026-02-26 20:13:40
● 2026-03-22 04:39:14
○ 2026-04-14 20:01:54
● 2026-04-16 22:25:24
○ 2026-05-23 21:35:40
● 2026-07-03 11:55:18
○ 2026-07-14 21:38:26
○ 2026-08-08 21:03:18

○A188.114.97.02026-03-22 → 2026-07-03 · 8 obs

○ 2026-02-26 20:13:40
● 2026-03-22 04:39:14
○ 2026-04-14 20:01:54
● 2026-04-16 22:25:24
○ 2026-05-23 21:35:40
● 2026-07-03 11:55:18
○ 2026-07-14 21:38:26
○ 2026-08-08 21:03:18

○A198.154.207.442015-05-24 → 2015-10-16 · 4 obs

● 2015-05-24 08:26:22
● 2015-10-16 21:20:38
○ 2015-11-01 21:07:30
○ 2026-08-08 21:03:18

○A209.188.86.1162016-11-23 → 2017-02-14 · 5 obs

○ 2016-06-18 14:54:16
● 2016-11-23 18:38:48
● 2017-02-14 05:01:12
○ 2021-05-20 09:00:20
○ 2026-08-08 21:03:18

●A2606:4700:3032::ac43:ca5d2026-02-15 → 2026-08-08 · 10 obs

○A2606:4700:3033::6815:18562021-05-20 → 2021-05-20 · 4 obs

○ 2017-02-14 05:01:12
● 2021-05-20 09:00:20
○ 2026-02-15 18:40:46
○ 2026-08-08 21:03:18

●A2606:4700:3033::6815:2caf2026-07-14 → 2026-08-08 · 3 obs

○ 2026-07-03 11:55:18
● 2026-07-14 21:38:26
● 2026-08-08 21:03:18

○A2606:4700:3034::6815:2caf2026-02-15 → 2026-05-23 · 9 obs

○A2606:4700:3034::ac43:da152021-05-20 → 2021-05-20 · 4 obs

○ 2017-02-14 05:01:12
● 2021-05-20 09:00:20
○ 2026-02-15 18:40:46
○ 2026-08-08 21:03:18

○A2a06:98c1:3120::2026-03-22 → 2026-07-03 · 8 obs

○ 2026-02-26 20:13:40
● 2026-03-22 04:39:14
○ 2026-04-14 20:01:54
● 2026-04-16 22:25:24
○ 2026-05-23 21:35:40
● 2026-07-03 11:55:18
○ 2026-07-14 21:38:26
○ 2026-08-08 21:03:18

○A2a06:98c1:3121::2026-03-22 → 2026-07-03 · 8 obs

○ 2026-02-26 20:13:40
● 2026-03-22 04:39:14
○ 2026-04-14 20:01:54
● 2026-04-16 22:25:24
○ 2026-05-23 21:35:40
● 2026-07-03 11:55:18
○ 2026-07-14 21:38:26
○ 2026-08-08 21:03:18

○A54.215.6.2302016-06-18 → 2016-06-18 · 4 obs

○ 2016-01-21 07:58:02
● 2016-06-18 14:54:16
○ 2016-11-23 18:38:48
○ 2026-08-08 21:03:18

○A54.228.189.2412016-01-21 → 2016-01-21 · 4 obs

○ 2015-11-01 21:07:30
● 2016-01-21 07:58:02
○ 2016-06-18 14:54:16
○ 2026-08-08 21:03:18

○A54.228.218.1172015-11-01 → 2015-11-01 · 4 obs

○ 2015-10-16 21:20:38
● 2015-11-01 21:07:30
○ 2016-01-21 07:58:02
○ 2026-08-08 21:03:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
programmerinterview.com	cruz.ns.cloudflare.com, jobs.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.88

NS records: cruz.ns.cloudflare.com, jobs.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programmerinterview.com (unsigned zone)

⏱️ Timing

Total: 198ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.44.175, 172.67.202.93`
AAAA	2	`2606:4700:3032::ac43:ca5d, 2606:4700:3033::6815:2caf`
NS	2	`cruz.ns.cloudflare.com, jobs.ns.cloudflare.com`
MX	2	`smtp.secureserver.net (pri: 1), mailstore1.secureserver.net (pri: 10)`
TXT	1	`ezoic-domain-verification=7ZUuTQ3qxpQtIz`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cruz.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

programmerinterview.com directs to four IP numbers, which are 104.21.44.175, 172.67.202.93, 2606:4700:3032::ac43:ca5d and 2606:4700:3033::6815:2caf.

Two other host names, along with itonedev.com, glaf.cn and gz-robot.com, also share IP numbers with programmerinterview.com.

Name Servers

The NS records for programmerinterview.com delegate to cruz.ns.cloudflare.com and jobs.ns.cloudflare.com.

programmerinterview.com shares its NS records with other domains, for example k3techs.com, freednsdedi.com, invoicemonk.com and two others.

There is at least partial name server overlap between programmerinterview.com and other domains — 3045533.com, union-bancaire-privee.net, safe-backs.mobi and two more among them.

These name servers are routinely deployed together with the name servers gerald.ns.cloudflare.com.

DNS names with 6 IP addresses:

cruz.ns.cloudflare.com maps to 108.162.192.88, 172.64.32.88, 173.245.58.88 and 3 additional IP addresses.

jobs.ns.cloudflare.com maps to 108.162.193.183, 172.64.33.183, 173.245.59.183 and 3 additional IP addresses.

Mail Servers

programmerinterview.com is served by two mail servers, mailstore1.secureserver.net and smtp.secureserver.net.

Among the domains sharing a mail server setup with programmerinterview.com are jaisetaise.com, tournamentoutfitters.com, jamesenewhouse.com and two others.

mailstore1.secureserver.net points to 216.69.141.78, 216.69.141.114 and 216.69.141.162. smtp.secureserver.net points to 216.69.141.71, 216.69.141.84 and 216.69.141.113. Both hosts resolve to three IP numbers.