online-school.us - robtex.com

online-school.us

DNSSEC⚠️ Not signed
A51.161.21.1🇨🇦 OVH51.161.0.0/17 Hosting route
PTRns3.expirationwarning.net
NSns3.expirationwarning.net ⭐
A51.161.21.1🇨🇦 OVH51.161.0.0/17 Hosting route
PTRns3.expirationwarning.net
NSns7.expirationwarning.net
A51.195.17.68🇫🇷 OVH51.195.0.0/16
PTRns7.expirationwarning.net
SOAns3.expirationwarning.nethostmaster@expirationwarning.net 2026-04-27 #0

us

DNSSEC🔒 Signed (DS record present)
NSa.cctld.us ⭐
NSb.cctld.us
NSf.cctld.us
NSk.cctld.us
NSm.cctld.us
NSn.cctld.us
NSw.cctld.us
NSx.cctld.us
NSy.cctld.us
SOAa.cctld.usadmin@tldns.godaddy serial=1777413348

Same first word

online-school.uz
online-school.co
online-school.biz
online-school.de
online-school.eu
online-school.net
online-school.ru
online-school.us
online-school.co.il
online-school.in
online-school.ch
online-school.com

Similar names

school-online.net
school-online.biz
on-lineschool.com
school-online.fr
loohcs-online.com
school-online.ru
school-online.nl
school-online.com
school-online.top
school-online.de

DNS History

21 records (3 active, 18 former)

20162017201820192020202120222023202420252026NSns3.expirationwarning.netns7.expirationwarning.netns1.dsredirection.comns1.ndsplitter.comns2.dsredirection.comns2.ndsplitter.comns3.ndsplitter.comA51.161.21.1159.69.186.9159.69.42.212159.69.83.207208.73.210.202208.73.210.204208.73.210.217208.73.211.152208.73.211.165208.73.211.172208.73.211.177208.73.211.24695.216.161.60PTRns1.dsredirection.com
○NSns1.dsredirection.com2015-06-26 → 2017-06-05 · 4 obs
● 2015-06-26 05:28:56
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○NSns1.ndsplitter.com2026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○NSns2.dsredirection.com2015-06-26 → 2017-06-05 · 4 obs
● 2015-06-26 05:28:56
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○NSns2.ndsplitter.com2026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
●NSns3.expirationwarning.net2026-04-28 → 2026-04-28 · 2 obs
○ 2026-04-27 12:22:12
● 2026-04-28 22:08:38
○NSns3.ndsplitter.com2026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
●NSns7.expirationwarning.net2026-04-28 → 2026-04-28 · 2 obs
○ 2026-04-27 12:22:12
● 2026-04-28 22:08:38
○A159.69.186.92026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A159.69.42.2122026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A159.69.83.2072026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A208.73.210.2022017-06-05 → 2017-06-05 · 4 obs
○ 2016-09-15 15:49:18
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A208.73.210.2042015-06-26 → 2016-09-15 · 4 obs
● 2015-06-26 05:28:56
● 2016-09-15 15:49:18
○ 2017-06-05 10:13:36
○ 2026-04-28 22:08:38
○A208.73.210.2172017-06-05 → 2017-06-05 · 4 obs
○ 2016-09-15 15:49:18
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A208.73.211.1522015-06-26 → 2016-09-15 · 4 obs
● 2015-06-26 05:28:56
● 2016-09-15 15:49:18
○ 2017-06-05 10:13:36
○ 2026-04-28 22:08:38
○A208.73.211.1652017-06-05 → 2017-06-05 · 4 obs
○ 2016-09-15 15:49:18
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A208.73.211.1722015-06-26 → 2016-09-15 · 4 obs
● 2015-06-26 05:28:56
● 2016-09-15 15:49:18
○ 2017-06-05 10:13:36
○ 2026-04-28 22:08:38
○A208.73.211.1772017-06-05 → 2017-06-05 · 4 obs
○ 2016-09-15 15:49:18
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○A208.73.211.2462015-06-26 → 2016-09-15 · 4 obs
● 2015-06-26 05:28:56
● 2016-09-15 15:49:18
○ 2017-06-05 10:13:36
○ 2026-04-28 22:08:38
●A51.161.21.12026-04-28 → 2026-04-28 · 2 obs
○ 2026-04-27 12:22:12
● 2026-04-28 22:08:38
○A95.216.161.602026-04-27 → 2026-04-27 · 3 obs
○ 2017-06-05 10:13:36
● 2026-04-27 12:22:12
○ 2026-04-28 22:08:38
○PTRns1.dsredirection.com2017-06-05 → 2017-06-05 · 3 obs
● 2017-06-05 10:13:36
○ 2026-04-27 12:22:12
○ 2026-04-28 22:08:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
usm.cctld.us, k.cctld.us, b.cctld.us, x.cctld.us...-
online-school.usns7.expirationwarning.net, ns3.expirationwarning.net-

✅ Authoritative Response

Server:51.161.21.1

NS records: ns7.expirationwarning.net, ns3.expirationwarning.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for online-school.us (unsigned zone)

⏱️ Timing

Total: 1088ms | Queries: -

📄 Records

TypeCountSample Data
A151.195.17.68
NS2ns3.expirationwarning.net, ns7.expirationwarning.net
SOA1ns3.expirationwarning.net hostmaster.exp

Analysis

IP Addresses

online-school.us points to a single IP number: 51.161.21.1.

Other host names, for instance haojiaoyinyue.com, silverdddies.com, cgyyjg.com, zoocaro.com and leica-ln.com share IP numbers with online-school.us.

Name Servers

Delegation for online-school.us rests with two name servers, ns3.expirationwarning.net and ns7.expirationwarning.net.

online-school.us shares the same name server setup as other domains, including lambo.org, visa-nj.com, www.886006.com, techbuilding.com and (0x787878)solo.com.

online-school.us at least partially shares name servers with other domains, for instance inter.wroc.net, darkinst.com, c.vk-intim.com, l0086yqt.com and aginginreverse.com.

Host names with one IP number: ns3.expirationwarning.net points to 51.161.21.1; ns7.expirationwarning.net points to 51.195.17.68.