classwork.ir - dns.ninja

classwork.ir

DNSSEC⚠️ Not signed
NSk.ns.arvancdn.ir ⚠️ Not in zone NS records
A185.143.232.253🇮🇷 ARVANCLOUD-CDN-IR185.143.232.0/24
NSx.ns.arvancdn.ir ⚠️ Not in zone NS records
A185.143.235.253🇮🇷 ARVANCLOUD-CDN-IR185.143.235.0/24

ir

DNSSEC⚠️ Not signed
NSa.nic.ir ⭐
NSb.nic.ir
NSc.nic.ir
NSd.nic.ir
SOAa.nic.irinfo@nic.ir serial=2608080930

Same first word

classwork.org.in
classwork.de
classwork.ir
classwork.xyz
classwork.com
classwork.net
classwork.in
classwork.school
classwork.co
classwork.co.uk
classwork.org
classwork.in.ua
classwork.ru

Similar names

crosswalk.com.au
workclass.cl
crosswalk.com
crosswalk.ru
crosswalk.in
crosswalk.us
crosswalk.org
crosswalk.jp
crosswalk.cc
crosswalk.online
workclass.co
crosswalk.church
crosswalk.info
crosswalk.sakura.ne.jp
crosswalk.nl
workclass.dk
workclass.com
crosswalk.it
crosswalk.lighting
workclass.com.br
caslworks.com
crosswalk.ch
crosswalk.eu
crosswalk.me
crosswalk.co.jp
crosswalk.net

DNS History

10 records (2 active, 8 former)

20192020202120222023202420252026NSk.ns.arvancdn.irx.ns.arvancdn.irns.classwork.irMXmail.classwork.irA185.143.233.234185.143.233.235185.143.234.234185.143.234.23587.107.54.1394.232.174.3
●NSk.ns.arvancdn.ir2026-03-24 → 2026-08-08 · 3 obs
○ 2018-09-14 05:47:06
● 2026-03-24 00:46:26
● 2026-08-08 06:40:38
○NSns.classwork.ir2018-09-14 → 2018-09-14 · 3 obs
● 2018-09-14 05:47:06
○ 2026-03-24 00:46:26
○ 2026-08-08 06:40:38
●NSx.ns.arvancdn.ir2026-03-24 → 2026-08-08 · 3 obs
○ 2018-09-14 05:47:06
● 2026-03-24 00:46:26
● 2026-08-08 06:40:38
○MXmail.classwork.ir2018-09-14 → 2018-09-14 · 3 obs
● 2018-09-14 05:47:06
○ 2026-03-24 00:46:26
○ 2026-08-08 06:40:38
○A185.143.233.2342026-05-26 → 2026-05-26 · 4 obs
○ 2026-05-19 03:25:52
● 2026-05-26 18:10:46
○ 2026-06-07 17:12:46
○ 2026-08-08 06:40:38
○A185.143.233.2352026-03-24 → 2026-06-20 · 9 obs
○ 2018-09-14 05:47:06
● 2026-03-24 00:46:26
● 2026-05-19 03:25:52
○ 2026-05-26 18:10:46
● 2026-06-07 17:12:46
○ 2026-06-14 13:25:48
● 2026-06-20 13:05:18
○ 2026-07-19 04:19:14
○ 2026-08-08 06:40:38
○A185.143.234.2342026-05-26 → 2026-05-26 · 4 obs
○ 2026-05-19 03:25:52
● 2026-05-26 18:10:46
○ 2026-06-07 17:12:46
○ 2026-08-08 06:40:38
○A185.143.234.2352026-03-24 → 2026-06-20 · 9 obs
○ 2018-09-14 05:47:06
● 2026-03-24 00:46:26
● 2026-05-19 03:25:52
○ 2026-05-26 18:10:46
● 2026-06-07 17:12:46
○ 2026-06-14 13:25:48
● 2026-06-20 13:05:18
○ 2026-07-19 04:19:14
○ 2026-08-08 06:40:38
○A87.107.54.132026-07-19 → 2026-07-19 · 3 obs
○ 2026-06-20 13:05:18
● 2026-07-19 04:19:14
○ 2026-08-08 06:40:38
○A94.232.174.32018-09-14 → 2018-09-14 · 3 obs
● 2018-09-14 05:47:06
○ 2026-03-24 00:46:26
○ 2026-08-08 06:40:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ira.nic.ir, b.nic.ir, c.nic.ir, d.nic.ir-
classwork.irx.ns.arvancdn.ir, k.ns.arvancdn.ir-

✅ Authoritative Response

Server:185.143.232.253

NS records: x.ns.arvancdn.ir, k.ns.arvancdn.ir

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at ir: Error: DNS query timeout: 193.189.123.2 for DNSKEY ir

⏱️ Timing

Total: 3312ms | Queries: -

📄 Records

TypeCountSample Data
A187.107.54.13
NS2k.ns.arvancdn.ir, x.ns.arvancdn.ir
SOA1k.ns.arvancdn.ir hostmaster.arvancloud.i

Analysis

Name Servers

classwork.ir uses two name servers for its delegation: k.ns.arvancdn.ir and x.ns.arvancdn.ir.

The name server configuration of classwork.ir is shared with other domains, for instance ilabs.ir, synstyle.ir, radiobimeh.com and two others.

The name servers of classwork.ir overlap at least partially with those of other domains — among them roboeq.ir, arktour.ir, snd360.ir and two more.

These name servers commonly appear in delegations together with z.ns.arvancdn.ir, h.ns.arvancdn.ir, q.ns.arvancdn.ir and 7 other.

Both k.ns.arvancdn.ir and x.ns.arvancdn.ir have a single IP address each — k.ns.arvancdn.ir resolves to 185.143.232.253 while x.ns.arvancdn.ir resolves to 185.143.235.253.