provbook.org - robtex.com

provbook.org

DNSSEC⚠️ Not signed
A20.33.62.135🇺🇸 AS806920.33.62.0/24
NSns0.susx.ac.uk ⭐
A139.184.15.63🇬🇧 JANET139.184.0.0/17 Computing Service University of Sussex Falmer Brighton East Sussex BN1 9QJ UNITED KINGDOM
PTRns0.susx.ac.uk
NSns1.susx.ac.uk
A2001:678:718:32::32:27🇬🇧 JANET2001:678:718::/48 Computing Service University of Sussex Falmer Brighton East Sussex BN1 9QJ UNITED KINGDOM
PTRns1.susx.ac.uk
A139.184.32.27🇬🇧 JANET139.184.0.0/17 Computing Service University of Sussex Falmer Brighton East Sussex BN1 9QJ UNITED KINGDOM
PTRns1.susx.ac.uk
NSns2.susx.ac.uk
A2001:678:718:32::32:26🇬🇧 JANET2001:678:718::/48 Computing Service University of Sussex Falmer Brighton East Sussex BN1 9QJ UNITED KINGDOM
PTRns2.susx.ac.uk
A139.184.32.26🇬🇧 JANET139.184.0.0/17 Computing Service University of Sussex Falmer Brighton East Sussex BN1 9QJ UNITED KINGDOM
PTRns2.susx.ac.uk
MXeu-smtp-inbound-1.mimecast.com ⭐
A91.220.42.201🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A91.220.42.211🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A91.220.42.241🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A195.130.217.201🇬🇧 MIMECAST-UK195.130.217.0/24
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A195.130.217.211🇬🇧 MIMECAST-UK195.130.217.0/24
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A195.130.217.241🇬🇧 MIMECAST-UK195.130.217.0/24
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
MXeu-smtp-inbound-2.mimecast.com ⭐
A91.220.42.201🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A91.220.42.211🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A91.220.42.241🇬🇧 MIMECAST-UK91.220.42.0/24 MIMECAST-NET2
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A195.130.217.201🇬🇧 MIMECAST-UK195.130.217.0/24
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A195.130.217.211🇬🇧 MIMECAST-UK195.130.217.0/24
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
A195.130.217.241🇬🇧 MIMECAST-UK195.130.217.0/24
PTReu-smtp-inbound-1.mimecast.com
PTReu-smtp-inbound-2.mimecast.com
SOAns0.susx.ac.ukhostmaster@sussex.ac.uk 2026-03-25 #19

org

DNSSEC🔒 Signed (DS record present)
NSa0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation
NSa2.org.afilias-nst.info ⚠️ Not in parent delegation
NSb0.org.afilias-nst.org
NSb2.org.afilias-nst.org
NSc0.org.afilias-nst.info ⚠️ Not in parent delegation
NSd0.org.afilias-nst.org
SOAa0.org.afilias-nst.infohostmaster@donuts.email serial=1774508004

Same first word

provbook.org

DNS History

21 records (6 active, 15 former)

20162017201820192020202120222023202420252026NSns0.susx.ac.ukns1.susx.ac.ukns2.susx.ac.ukdns0.soton.ac.ukdns1.soton.ac.ukdns2.soton.ac.ukdns3.soton.ac.ukns0.ecs.soton.ac.ukns0.gradwell.netns1.ecs.soton.ac.ukns1.gradwell.netns2.ecs.soton.ac.ukns2.gradwell.netraven.ecs.soton.ac.uksrv00170.soton.ac.ukMXeu-smtp-inbound-1.mimecast.comeu-smtp-inbound-2.mimecast.commx.ecs.soton.ac.ukA20.33.62.135152.78.189.432001:630:d0:f104::80e
○NSdns0.soton.ac.uk2015-12-14 → 2017-02-18 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
○NSdns1.soton.ac.uk2015-12-14 → 2017-02-18 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
○NSdns2.soton.ac.uk2015-12-14 → 2017-02-18 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
○NSdns3.soton.ac.uk2015-12-14 → 2017-02-18 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
○NSns0.ecs.soton.ac.uk2015-05-16 → 2016-12-31 · 4 obs
● 2015-05-16 12:26:56
● 2016-12-31 06:52:40
○ 2017-02-18 23:14:44
○ 2026-03-26 07:05:44
○NSns0.gradwell.net2015-12-14 → 2016-12-31 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2016-12-31 06:52:40
○ 2017-02-18 23:14:44
○ 2026-03-26 07:05:44
●NSns0.susx.ac.uk2026-03-08 → 2026-03-26 · 3 obs
○ 2017-02-18 23:14:44
● 2026-03-08 20:56:16
● 2026-03-26 07:05:44
○NSns1.ecs.soton.ac.uk2015-05-16 → 2016-12-31 · 4 obs
● 2015-05-16 12:26:56
● 2016-12-31 06:52:40
○ 2017-02-18 23:14:44
○ 2026-03-26 07:05:44
○NSns1.gradwell.net2015-12-14 → 2016-12-31 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2016-12-31 06:52:40
○ 2017-02-18 23:14:44
○ 2026-03-26 07:05:44
●NSns1.susx.ac.uk2026-03-08 → 2026-03-26 · 3 obs
○ 2017-02-18 23:14:44
● 2026-03-08 20:56:16
● 2026-03-26 07:05:44
○NSns2.ecs.soton.ac.uk2015-05-16 → 2015-10-10 · 4 obs
● 2015-05-16 12:26:56
● 2015-10-10 11:58:22
○ 2015-12-14 06:55:32
○ 2026-03-26 07:05:44
○NSns2.gradwell.net2015-12-14 → 2016-12-31 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2016-12-31 06:52:40
○ 2017-02-18 23:14:44
○ 2026-03-26 07:05:44
●NSns2.susx.ac.uk2026-03-08 → 2026-03-26 · 3 obs
○ 2017-02-18 23:14:44
● 2026-03-08 20:56:16
● 2026-03-26 07:05:44
○NSraven.ecs.soton.ac.uk2015-05-16 → 2015-10-10 · 4 obs
● 2015-05-16 12:26:56
● 2015-10-10 11:58:22
○ 2015-12-14 06:55:32
○ 2026-03-26 07:05:44
○NSsrv00170.soton.ac.uk2015-12-14 → 2017-02-18 · 5 obs
○ 2015-10-10 11:58:22
● 2015-12-14 06:55:32
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
●MXeu-smtp-inbound-1.mimecast.com2026-03-08 → 2026-03-26 · 3 obs
○ 2017-02-18 23:14:44
● 2026-03-08 20:56:16
● 2026-03-26 07:05:44
●MXeu-smtp-inbound-2.mimecast.com2026-03-08 → 2026-03-26 · 3 obs
○ 2017-02-18 23:14:44
● 2026-03-08 20:56:16
● 2026-03-26 07:05:44
○MXmx.ecs.soton.ac.uk2015-05-16 → 2017-02-18 · 4 obs
● 2015-05-16 12:26:56
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
○A152.78.189.432015-05-16 → 2017-02-18 · 4 obs
● 2015-05-16 12:26:56
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44
●A20.33.62.1352026-03-08 → 2026-03-26 · 3 obs
○ 2017-02-18 23:14:44
● 2026-03-08 20:56:16
● 2026-03-26 07:05:44
○A2001:630:d0:f104::80e2015-05-16 → 2017-02-18 · 4 obs
● 2015-05-16 12:26:56
● 2017-02-18 23:14:44
○ 2026-03-08 20:56:16
○ 2026-03-26 07:05:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org-
provbook.orgns1.susx.ac.uk, ns2.susx.ac.uk-

✅ Authoritative Response

Server:139.184.32.27

NS records: ns1.susx.ac.uk, ns2.susx.ac.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for provbook.org (unsigned zone)

⏱️ Timing

Total: 1130ms | Queries: -

📄 Records

TypeCountSample Data
A120.33.62.135
NS2ns2.susx.ac.uk, ns1.susx.ac.uk
MX2eu-smtp-inbound-1.mimecast.com (pri: 10), eu-smtp-inbound-2.mimecast.com (pri: 10)
SOA1ns0.susx.ac.uk hostmaster.sussex.ac.uk

Analysis

IP Addresses

provbook.org resolves to one IP number: 20.33.62.135.

Other host names, for example gridprovenance.org, share IP numbers with provbook.org.

Name Servers

provbook.org is delegated to three name servers: ns0.susx.ac.uk, ns1.susx.ac.uk and ns2.susx.ac.uk.

provbook.org at least partially shares name servers with other domains, including sw.susx.ac.uk, lib.sussex.ac.uk, lib.susx.ac.uk, sussex.ac.uk and uscs.susx.ac.uk.

these name servers are commonly used alongside the name servers ns4.susx.ac.uk, ns3.susx.ac.uk, dns0.cs.bham.ac.uk, ns3.ja.net and dns1.cs.bham.ac.uk.

Hosts with two IPs:

ns1.susx.ac.uk points to 2001:678:718:32::32:27 and 139.184.32.27.

ns2.susx.ac.uk points to 2001:678:718:32::32:26 and 139.184.32.26.

Host with one IP:

ns0.susx.ac.uk points to 139.184.15.63.

Mail Servers

provbook.org is served by two mail servers eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

provbook.org shares the same mail server setup as other domains, for instance humatica.org, livesoundservices.co.uk, scottybrand.com, techflow.co.uk and kelly.at.

provbook.org shares at least some mail servers with other domains, for example metrofone.co.uk, homeandgift.co.uk, orbex.space, keenpac.fr and balderton.community.

Host names with six IP numbers:

eu-smtp-inbound-1.mimecast.com points to: 91.220.42.201, 91.220.42.211, 91.220.42.241, 195.130.217.201, 195.130.217.211 and 195.130.217.241.

eu-smtp-inbound-2.mimecast.com points to: 91.220.42.201, 91.220.42.211, 91.220.42.241, 195.130.217.201, 195.130.217.211 and 195.130.217.241.

Host names that point to each IP:

91.220.42.201 is pointed to by: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

91.220.42.211 is pointed to by: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

91.220.42.241 is pointed to by: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

195.130.217.201 is pointed to by: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

195.130.217.211 is pointed to by: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.

195.130.217.241 is pointed to by: eu-smtp-inbound-1.mimecast.com and eu-smtp-inbound-2.mimecast.com.