a.school - robtex.com

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a.school

DNSSEC⚠️ Not signed
A3.20.143.183🇺🇸 Amazon
PTRec2-3-20-143-183.us-east-2.compute.amazonaws.com
A3.139.117.14🇺🇸 Amazon
A18.221.37.164🇺🇸 Amazon
NSns-1155.awsdns-16.org ⭐
A2600:9000:5304:8300::1🇺🇸 Amazon
PTRns-1155.awsdns-16.org
A205.251.196.131🇺🇸 Amazon
PTRns-1155.awsdns-16.org
NSns-1858.awsdns-40.co.uk
A2600:9000:5307:4200::1🇺🇸 Amazon
PTRns-1858.awsdns-40.co.uk
A205.251.199.66🇺🇸 Amazon
PTRns-1858.awsdns-40.co.uk
NSns-340.awsdns-42.com
A2600:9000:5301:5400::1🇺🇸 Amazon
PTRns-340.awsdns-42.com
A205.251.193.84🇺🇸 Amazon
PTRns-340.awsdns-42.com
NSns-916.awsdns-50.net
A2600:9000:5303:9400::1🇺🇸 Amazon
PTRns-916.awsdns-50.net
A205.251.195.148🇺🇸 Amazon
PTRns-916.awsdns-50.net
MXa-school.mail.protection.outlook.com ⭐
TXTMS=ms17966614
TXTv=spf1 include:spf.protection.outlook.com -all
SOAns-1155.awsdns-16.orgawsdns-hostmaster@amazon.com serial=1

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=1771366889

Up

www.a.school

Same first word

a.cab
a.education
a.fr
a.how
a.com.uy
a.center
a.industries
a.cash
a.akamaiedge-staging.net
a.tm
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a.cr
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a.holiday
a.bot
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a.amsterdam
a.de
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a.at
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a.land
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a.fo
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a.express
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a.hu
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a.doctor
a.je
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a.kg
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a.gt
a.mk
a.business
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a.gmbh
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a.foundation
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a.cl
a.to
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a.careers
a.parts
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a.tennis
a.ms
a.solutions
a.plus
a.events
a.co.za
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a.partners
a.canva-apps.cn
a.pictures
a.guru
a.zip
a.directory
a.school
a.net.pl
a.org
a.dk
a.tv
a.com.se
a.gov.lv
a.pisz.pl

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a.net.cn
a.realty
a.boutique
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a.me
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DNS History

13 records (8 active, 5 former)

2017201820192020202120222023202420252026NSns-1155.awsdns-16.orgns-1858.awsdns-40.co.ukns-340.awsdns-42.comns-916.awsdns-50.netns61.domaincontrol.comns62.domaincontrol.comMXa-school.mail.protection.outlook.commailstore1.secureserver.netsmtp.secureserver.netA18.221.37.1643.139.117.143.20.143.18350.63.202.45
●NSns-1155.awsdns-16.org2026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
●NSns-1858.awsdns-40.co.uk2026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
●NSns-340.awsdns-42.com2026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
●NSns-916.awsdns-50.net2026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
○NSns61.domaincontrol.com2016-12-10 → 2017-08-09 · 4 obs
● 2016-12-10 20:23:24
● 2017-08-09 00:57:14
○ 2026-02-17 09:42:08
○ 2026-02-18 02:01:40
○NSns62.domaincontrol.com2016-12-10 → 2017-08-09 · 4 obs
● 2016-12-10 20:23:24
● 2017-08-09 00:57:14
○ 2026-02-17 09:42:08
○ 2026-02-18 02:01:40
●MXa-school.mail.protection.outlook.com2026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
○MXmailstore1.secureserver.net2016-12-10 → 2017-08-09 · 4 obs
● 2016-12-10 20:23:24
● 2017-08-09 00:57:14
○ 2026-02-17 09:42:08
○ 2026-02-18 02:01:40
○MXsmtp.secureserver.net2016-12-10 → 2017-08-09 · 4 obs
● 2016-12-10 20:23:24
● 2017-08-09 00:57:14
○ 2026-02-17 09:42:08
○ 2026-02-18 02:01:40
●A18.221.37.1642026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
●A3.139.117.142026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
●A3.20.143.1832026-02-17 → 2026-02-18 · 3 obs
○ 2017-08-09 00:57:14
● 2026-02-17 09:42:08
● 2026-02-18 02:01:40
○A50.63.202.452016-12-10 → 2017-08-09 · 4 obs
● 2016-12-10 20:23:24
● 2017-08-09 00:57:14
○ 2026-02-17 09:42:08
○ 2026-02-18 02:01:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
a.schoolns-340.awsdns-42.com, ns-916.awsdns-50.net, ns-1155.awsdns-16.org, ns-1858.awsdns-40.co.uk-

✅ Authoritative Response

Server: 205.251.199.66

NS records: ns-340.awsdns-42.com, ns-916.awsdns-50.net, ns-1155.awsdns-16.org, ns-1858.awsdns-40.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for a.school (unsigned zone)

⏱️ Timing

Total: 78ms | Queries: -

📄 Records

TypeCountSample Data
A318.221.37.164, 3.20.143.183...
NS4ns-1155.awsdns-16.org, ns-1858.awsdns-40.co.uk...
MX1a-school.mail.protection.outlook.com (pr
TXT2MS=ms17966614, v=spf1 include:spf.protection.outlook.co
SOA1ns-1155.awsdns-16.org awsdns-hostmaster.

AI analysis

a.school is the parent of www.a.school.

a.school points to three IPs: 3.20.143.183, 3.139.117.14 and 18.221.37.164.

Other host names such as ec2-18-221-37-164.us-east-2.compute.amazonaws.com and www.a.school share IP numbers with a.school.

a.school is delegated to four name servers: ns-340.awsdns-42.com, ns-916.awsdns-50.net, ns-1155.awsdns-16.org and ns-1858.awsdns-40.co.uk.

a.school at least partially shares name servers with other domains, for instance vcastle.net, stmarysale.catholic.edu.au, bravofly.com.br, d1358o20u1nfy0.cloudfront.net and salemspirits.com.

These name servers are commonly used alongside ns1-24-me-central-1.ec2-rdns.amazonaws.com, ns2-24-me-central-1.ec2-rdns.amazonaws.com, ns3-24-me-central-1.ec2-rdns.amazonaws.com, ns4-24-me-central-1.ec2-rdns.amazonaws.com, ns-1439.awsdns-51.org and ns-612.awsdns-12.net.

Host names with two IP numbers:

ns-340.awsdns-42.com points to 2600:9000:5301:5400::1 and 205.251.193.84; ns-916.awsdns-50.net points to 2600:9000:5303:9400::1 and 205.251.195.148; ns-1155.awsdns-16.org points to 2600:9000:5304:8300::1 and 205.251.196.131; ns-1858.awsdns-40.co.uk points to 2600:9000:5307:4200::1 and 205.251.199.66.

a.school is handled by a single mail server, a-school.mail.protection.outlook.com.