ultimatelibrary.co.uk - robtex.com

ultimatelibrary.co.uk

DNSSEC⚠️ Not signed
A18.158.244.239🇩🇪 Amazon18.156.0.0/14 EC2 FRA prefix
PTRec2-18-158-244-239.eu-central-1.compute.amazonaws.com
NSns1.krystal.uk ⭐ ⚠️ Not in parent delegation
A77.72.0.11🇬🇧 KRYSTAL77.72.0.0/21 Krystal Hosting Ltd
PTRns1.krystal.uk
NSns1.krystal.co.uk ⚠️ Not in zone NS records
A77.72.0.11🇬🇧 KRYSTAL77.72.0.0/21 Krystal Hosting Ltd
PTRns1.krystal.uk
NSns2.krystal.co.uk ⚠️ Not in zone NS records
A139.162.230.184🇬🇧 AKAMAI-LINODE-AP139.162.224.0/19 Akamai Technologies
PTRns2.krystal.uk
NSns2.krystal.uk ⚠️ Not in parent delegation
A139.162.230.184🇬🇧 AKAMAI-LINODE-AP139.162.224.0/19 Akamai Technologies
PTRns2.krystal.uk
MXultimatelibrary-co-uk.mail.protection.outlook.com ⭐
A2a01:111:f403:ca04::8🇮🇪 Microsoft2a01:111:f000::/36
PTRmail-db5pr02cu00100.inbound.protection.outlook.com
A2a01:111:f403:ca09::🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am3pr04cu00500.inbound.protection.outlook.com
A2a01:111:f403:ca09::4🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-am0pr04cu00504.inbound.protection.outlook.com
A2a01:111:f403:ca09::c🇳🇱 Microsoft2a01:111:f000::/36
PTRmail-as8pr05cu00304.inbound.protection.outlook.com
A52.101.68.18🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db4pr02cu00302.inbound.protection.outlook.com
A52.101.68.27🇮🇪 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-db7pr03cu00503.inbound.protection.outlook.com
A52.101.73.19🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr04cu00803.inbound.protection.outlook.com
A52.101.73.153🇳🇱 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-as8pr05cu00401.inbound.protection.outlook.com
TXTgoogle-site-verification=x2D20L-0vyT2C50G5Gl8ag5WW6hsplm1WqPEVaF21lo
TXTv=spf1 ip4:77.72.2.153 include:relay.k.io mx a ip4:77.72.2.17 include:spf.pro...
TXT_dmarc v=DMARC1; p=none
SOAns1.krystal.ukadmin@demo.p153.lon.krystal.io 2026-07-12 #3

co.uk

DNSSEC⚠️ Not signed
NSdns1.nic.uk ⭐ ⚠️ Not in parent delegation
NSdns2.nic.uk ⚠️ Not in parent delegation
NSdns3.nic.uk ⚠️ Not in parent delegation
NSdns4.nic.uk ⚠️ Not in parent delegation
NSnsa.nic.uk ⚠️ Not in parent delegation
NSnsb.nic.uk ⚠️ Not in parent delegation
NSnsc.nic.uk ⚠️ Not in parent delegation
NSnsd.nic.uk ⚠️ Not in parent delegation
SOAdns1.nic.ukhostmaster@nominet.org.uk serial=1785776863
rank #117513 globally
rank #3203 in the tld
WOT: SAFE (74/100)

Previously MX for

ultimatelibrary.co.uk

Subdomains

www.ultimatelibrary.co.uk

Same first word

ultimatelibrary.info
ultimatelibrary.shop
ultimatelibrary.me
ultimatelibrary.co.uk

DNS History

11 records (6 active, 5 former)

20162017201820192020202120222023202420252026NSns1.krystal.co.ukns1.krystal.ukns2.krystal.co.ukns2.krystal.ukns15.hosted-ns.netns16.hosted-ns.netMXultimatelibrary-co-uk.mail.protection.outlook.comultimatelibrary.co.ukA18.158.244.23984.18.210.11484.18.210.119
●NSns1.krystal.co.uk2026-06-26 → 2026-08-03 · 3 obs
○ 2017-06-27 10:26:58
● 2026-06-26 02:53:58
● 2026-08-03 17:31:10
●NSns1.krystal.uk2026-06-26 → 2026-08-03 · 3 obs
○ 2017-06-27 10:26:58
● 2026-06-26 02:53:58
● 2026-08-03 17:31:10
○NSns15.hosted-ns.net2015-06-25 → 2017-06-27 · 4 obs
● 2015-06-25 12:31:26
● 2017-06-27 10:26:58
○ 2026-06-26 02:53:58
○ 2026-08-03 17:31:10
○NSns16.hosted-ns.net2015-06-25 → 2017-06-27 · 4 obs
● 2015-06-25 12:31:26
● 2017-06-27 10:26:58
○ 2026-06-26 02:53:58
○ 2026-08-03 17:31:10
●NSns2.krystal.co.uk2026-06-26 → 2026-08-03 · 3 obs
○ 2017-06-27 10:26:58
● 2026-06-26 02:53:58
● 2026-08-03 17:31:10
●NSns2.krystal.uk2026-06-26 → 2026-08-03 · 3 obs
○ 2017-06-27 10:26:58
● 2026-06-26 02:53:58
● 2026-08-03 17:31:10
●MXultimatelibrary-co-uk.mail.protection.outlook.com2015-11-04 → 2026-08-03 · 3 obs
○ 2015-06-25 12:31:26
● 2015-11-04 00:02:04
● 2026-08-03 17:31:10
○MXultimatelibrary.co.uk2015-06-25 → 2015-06-25 · 3 obs
● 2015-06-25 12:31:26
○ 2015-11-04 00:02:04
○ 2026-08-03 17:31:10
●A18.158.244.2392026-06-26 → 2026-08-03 · 3 obs
○ 2017-06-27 10:26:58
● 2026-06-26 02:53:58
● 2026-08-03 17:31:10
○A84.18.210.1142015-06-25 → 2015-11-04 · 4 obs
● 2015-06-25 12:31:26
● 2015-11-04 00:02:04
○ 2016-01-24 16:51:04
○ 2026-08-03 17:31:10
○A84.18.210.1192016-01-24 → 2017-06-27 · 5 obs
○ 2015-11-04 00:02:04
● 2016-01-24 16:51:04
● 2017-06-27 10:26:58
○ 2026-06-26 02:53:58
○ 2026-08-03 17:31:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ukdns1.nic.uk, nsb.nic.uk, nsa.nic.uk, dns2.nic.uk...-
ultimatelibrary.co.ukns2.krystal.co.uk, ns1.krystal.co.uk-

✅ Authoritative Response

Server:139.162.230.184

NS records: ns2.krystal.co.uk, ns1.krystal.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ultimatelibrary.co.uk (unsigned zone)

⏱️ Timing

Total: 645ms | Queries: -

📄 Records

TypeCountSample Data
A118.158.244.239
NS2ns1.krystal.uk, ns2.krystal.uk
MX1ultimatelibrary-co-uk.mail.protection.ou
TXT3google-site-verification=x2D20L-0vyT2C50, v=spf1 ip4:77.72.2.153 include:relay.k.i...
SOA1ns1.krystal.uk admin.demo.p153.lon.kryst

Analysis

Hierarchy

ultimatelibrary.co.uk is a parent domain of www.ultimatelibrary.co.uk.

IP Addresses

ultimatelibrary.co.uk points to a single IP number: 18.158.244.239.

Additional host names — luxxpr.co.uk, ec2-18-158-244-239.eu-central-1.compute.amazonaws.com, maunby.com and two others — share IP numbers with ultimatelibrary.co.uk.

Name Servers

ultimatelibrary.co.uk has four authoritative name servers: ns1.krystal.uk, ns2.krystal.uk, ns1.krystal.co.uk and ns2.krystal.co.uk.

ultimatelibrary.co.uk shares at least some of its name servers with other domains, including ianstanley.org.uk, modelair.info, affirmit.co.uk and two others.

These name servers are frequently seen alongside ns1.cloudhosting.uk, ns2.cloudhosting.uk, ns1.cloudhosting.co.uk and 7 other name servers.

The four host names ns1.krystal.uk, ns2.krystal.uk, ns1.krystal.co.uk and ns2.krystal.co.uk each resolve to a single IP address. ns1.krystal.uk and ns1.krystal.co.uk both point to 77.72.0.11, while ns2.krystal.uk and ns2.krystal.co.uk both point to 139.162.230.184.

ns1.krystal.uk along with ns1.krystal.co.uk each resolve to 77.72.0.11 IP addresses.

ns2.krystal.uk along with ns2.krystal.co.uk each resolve to 139.162.230.184 IP addresses.

Mail Servers

ultimatelibrary.co.uk has one mail server: ultimatelibrary-co-uk.mail.protection.outlook.com.

ultimatelibrary-co-uk.mail.protection.outlook.com points to 8 IP numbers: 52.101.68.18, 52.101.68.27, 52.101.73.19 and 5 other.