programming.school - robtex.com

programming.school

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:3a56🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:9e64🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.58.86Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.158.100🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjihoon.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2ce9🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
A2803:f800:50::6ca2:c3e9🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjihoon.ns.cloudflare.com
A2a06:98c1:50::ac40:23e9🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjihoon.ns.cloudflare.com
A108.162.195.233🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
A162.159.44.233Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
A172.64.35.233🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjihoon.ns.cloudflare.com
NSmartha.ns.cloudflare.com
A2606:4700:50::a29f:268e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmartha.ns.cloudflare.com
A2803:f800:50::6ca2:c28e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmartha.ns.cloudflare.com
A2a06:98c1:50::ac40:228e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmartha.ns.cloudflare.com
A108.162.194.142🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmartha.ns.cloudflare.com
A162.159.38.142Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmartha.ns.cloudflare.com
A172.64.34.142🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmartha.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c1d::1b🇺🇸 Google2607:f8b0:4004::/48
PTRww-in-f27.1e100.net
A142.251.163.26🇺🇸 Google142.251.163.0/24
PTRwv-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1a🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1b🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f27.1e100.net
A172.253.157.27🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f27.1e100.net
TXTZOOM_verify_2mzSsJVwRqi3fRhGHTXe_w
TXTgoogle-site-verification=HNDjaamdAoh2-PTFq4rTJwwKWV0c7UbW-BXySw47feo
TXTgoogle-site-verification=vUgmvsZd73OK0Y9bfdGQJwNivgRIrTnLGH9Nf5QAFtI
TXTv=spf1 include:_spf.mlsend.com include:one.zoho.com include:_spf.google.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.58.86, 172.67.158.100
IPv6 hints2606:4700:3032::6815:3a56, 2606:4700:3035::ac43:9e64
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=221, name=cloudflare-ech.com
SOAjihoon.ns.cloudflare.comdns@cloudflare.com serial=2407336429

school

DNSSEC🔒 Signed (DS record present)
NSv0n0.nic.school ⭐
NSv0n1.nic.school
NSv0n2.nic.school
NSv0n3.nic.school
NSv2n0.nic.school
NSv2n1.nic.school
SOAv0n0.nic.schoolhostmaster@donuts.email serial=1783187629

Subdomains

vn.programming.school

Same first word

programming.cl
programming.ch
programming.guru
programming.technology
programming.ph
programming.email
programming.my
programming.cc
programming.us
programming.at
programming.cn
programming.org
programming.guide
programming.in.th
programming.mobi
programming.pl
programming.im
programming.school
programming.lv
programming.monster
programming.academy
programming.com.cn
programming.hu
programming.gr
programming.tools
programming.run
programming.or.jp
programming.team
programming.zone
programming.in.ua
programming.asia
programming.center
programming.biz
programming.fail
programming.nu
programming.fr
programming.be
programming.ca
programming.in
programming.de
programming.tv
programming.systems
programming.fyi
programming.com.sg
programming.sa
programming.education
programming.dev
programming.es
programming.ru
programming.com

Similar names

porgramming.com

DNS History

13 records (11 active, 2 former)

NSjihoon.ns.cloudflare.commartha.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.58.86172.67.158.1002606:4700:3032::6815:3a562606:4700:3035::ac43:9e642606:4700:3031::ac43:9e642606:4700:3037::6815:3a56
●NSjihoon.ns.cloudflare.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●NSmartha.ns.cloudflare.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●MXalt1.aspmx.l.google.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●MXalt2.aspmx.l.google.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●MXalt3.aspmx.l.google.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●MXalt4.aspmx.l.google.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●MXaspmx.l.google.com2026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●A104.21.58.862026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
●A172.67.158.1002026-05-13 → 2026-07-04 · 2 obs
● 2026-05-13 16:09:34
● 2026-07-04 18:27:28
○A2606:4700:3031::ac43:9e642026-05-13 → 2026-06-04 · 4 obs
● 2026-05-13 16:09:34
● 2026-06-04 20:12:04
○ 2026-06-30 18:25:02
○ 2026-07-04 18:27:28
●A2606:4700:3032::6815:3a562026-06-30 → 2026-07-04 · 3 obs
○ 2026-06-04 20:12:04
● 2026-06-30 18:25:02
● 2026-07-04 18:27:28
●A2606:4700:3035::ac43:9e642026-06-30 → 2026-07-04 · 3 obs
○ 2026-06-04 20:12:04
● 2026-06-30 18:25:02
● 2026-07-04 18:27:28
○A2606:4700:3037::6815:3a562026-05-13 → 2026-06-04 · 4 obs
● 2026-05-13 16:09:34
● 2026-06-04 20:12:04
○ 2026-06-30 18:25:02
○ 2026-07-04 18:27:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
schoolv2n1.nic.school, v0n3.nic.school, v0n1.nic.school, v0n0.nic.school...12 records
programming.schooljihoon.ns.cloudflare.com, martha.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.142

NS records: jihoon.ns.cloudflare.com, martha.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programming.school (unsigned zone)

⏱️ Timing

Total: 563ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.158.100, 104.21.58.86
AAAA22606:4700:3035::ac43:9e64, 2606:4700:3032::6815:3a56
NS2jihoon.ns.cloudflare.com, martha.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT4ZOOM_verify_2mzSsJVwRqi3fRhGHTXe_w, google-site-verification=HNDjaamdAoh2-PT...
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1jihoon.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (v2n1.nic.school, v2n0.nic.school, v0n3.nic.school...)

Analysis

Hierarchy

programming.school is a parent domain of vn.programming.school.

IP Addresses

programming.school has four IP addresses: 104.21.58.86, 172.67.158.100, 2606:4700:3032::6815:3a56 and 2606:4700:3035::ac43:9e64.

wayfairofficesetup.com, strike-mish.com, api.thahabi.org and two other host names share IP numbers with programming.school.

Name Servers

Two name servers handle the delegation for programming.school: jihoon.ns.cloudflare.com and martha.ns.cloudflare.com.

programming.school uses the same name servers as several other domains — among them buscaplaya.com, netklinik.dk, agrosus.com and two more.

programming.school shares at least some of its name servers with other domains, including sparkspace.us, olivann.net, 3356207189.workers.dev and two others.

These name servers are frequently paired with the name servers duke.ns.cloudflare.com, nash.ns.cloudflare.com and blair.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

jihoon.ns.cloudflare.com resolves to 108.162.195.233, 162.159.44.233 and 172.64.35.233 among others, with 3 other IP addresses in total.

martha.ns.cloudflare.com resolves to 108.162.194.142, 162.159.38.142 and 172.64.34.142 among others, with 3 other IP addresses in total.

Mail Servers

Mail for programming.school is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

programming.school has at least partial mail server overlap with other domains such as flin.org, ns500765.ns500693.ns500734.ns500693.ns500693.ns500693.ns500693.ns500693.ns500693.ns500683.ns500693.ns500683.ns500699.ns500602.dtrkdll.com, ns500698.ns500758.ns500698.ns500758.ns500735.ns500735.ns500698.ns500698.ns500708.ns500698.ns500698.ns500652.ns500652.ns500619.trackreceptor.com and two more.

The mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are commonly seen alongside these mail servers.

Hostnames that resolve to two IP addresses:

aspmx.l.google.com resolves to two addresses: 142.251.163.26 and 2607:f8b0:4004:c1d::1b.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.27 and 2a00:1450:400c:c23::1b.