jwharmston.com - robtex.com

jwharmston.com

DNSSEC⚠️ Not signed
A91.207.50.30🇬🇧 HNS91.207.50.0/23 See AS39537 for contact details
NSns1.web-dns.net ⭐ ⚠️ Not in parent delegation
A91.207.50.253🇬🇧 HNS91.207.50.0/23 See AS39537 for contact details
PTRns1.penguin-uk.net
NSns1.penguin-uk.net ⚠️ Not in zone NS records
A91.207.50.253🇬🇧 HNS91.207.50.0/23 See AS39537 for contact details
PTRns1.penguin-uk.net
NSns2.penguin-uk.net ⚠️ Not in zone NS records
A91.207.51.253🇬🇧 HNS91.207.50.0/23 See AS39537 for contact details
NSns2.web-dns.net ⚠️ Not in parent delegation
A91.207.51.253🇬🇧 HNS91.207.50.0/23 See AS39537 for contact details
NSns3.penguin-uk.net ⚠️ Not in zone NS records
A172.187.240.241🇬🇧 Microsoft172.160.0.0/11
PTRns3.penguin-uk.net
NSns3.web-dns.net ⚠️ Not in parent delegation
A172.187.240.241🇬🇧 Microsoft172.160.0.0/11
PTRns3.penguin-uk.net
MXjwharmston.com ⭐
A91.207.50.30🇬🇧 HNS91.207.50.0/23 See AS39537 for contact details
TXTv=spf1 +a +mx +ip4:91.207.50.30 ~all
SOAns1.web-dns.netjason@slnl.co.uk 2026-04-10 #1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778765891

MX for

jwharmston.com

Subdomains

mail.jwharmston.com

Same first word

jwharmston.com

DNS History

20 records (8 active, 12 former)

20162017201820192020202120222023202420252026NSns1.penguin-uk.netns1.web-dns.netns2.penguin-uk.netns2.web-dns.netns3.penguin-uk.netns3.web-dns.netns1.bdm.microsoftonline.comns1.bpnl.netns2.bdm.microsoftonline.comns2.bpnl.netns3.bdm.microsoftonline.comns4.bdm.microsoftonline.comMXjwharmston.comjwharmston-com.mail.protection.outlook.commail.jwharmston.commail2.jwharmston.comA91.207.50.3081.174.250.22091.207.50.4091.207.50.70
○NSns1.bdm.microsoftonline.com2016-09-24 → 2017-09-19 · 5 obs
○ 2016-04-10 09:55:24
● 2016-09-24 18:14:02
● 2017-09-19 04:36:06
○ 2026-04-19 13:09:28
○ 2026-05-14 14:04:38
○NSns1.bpnl.net2015-06-16 → 2016-04-10 · 4 obs
● 2015-06-16 12:59:52
● 2016-04-10 09:55:24
○ 2016-09-24 18:14:02
○ 2026-05-14 14:04:38
●NSns1.penguin-uk.net2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
●NSns1.web-dns.net2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
○NSns2.bdm.microsoftonline.com2016-09-24 → 2017-09-19 · 5 obs
○ 2016-04-10 09:55:24
● 2016-09-24 18:14:02
● 2017-09-19 04:36:06
○ 2026-04-19 13:09:28
○ 2026-05-14 14:04:38
○NSns2.bpnl.net2015-06-16 → 2016-04-10 · 4 obs
● 2015-06-16 12:59:52
● 2016-04-10 09:55:24
○ 2016-09-24 18:14:02
○ 2026-05-14 14:04:38
●NSns2.penguin-uk.net2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
●NSns2.web-dns.net2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
○NSns3.bdm.microsoftonline.com2016-09-24 → 2017-09-19 · 5 obs
○ 2016-04-10 09:55:24
● 2016-09-24 18:14:02
● 2017-09-19 04:36:06
○ 2026-04-19 13:09:28
○ 2026-05-14 14:04:38
●NSns3.penguin-uk.net2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
●NSns3.web-dns.net2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
○NSns4.bdm.microsoftonline.com2016-09-24 → 2017-09-19 · 5 obs
○ 2016-04-10 09:55:24
● 2016-09-24 18:14:02
● 2017-09-19 04:36:06
○ 2026-04-19 13:09:28
○ 2026-05-14 14:04:38
○MXjwharmston-com.mail.protection.outlook.com2016-09-24 → 2017-09-19 · 5 obs
○ 2016-04-10 09:55:24
● 2016-09-24 18:14:02
● 2017-09-19 04:36:06
○ 2026-04-19 13:09:28
○ 2026-05-14 14:04:38
●MXjwharmston.com2026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
○MXmail.jwharmston.com2015-06-16 → 2016-04-10 · 4 obs
● 2015-06-16 12:59:52
● 2016-04-10 09:55:24
○ 2016-09-24 18:14:02
○ 2026-05-14 14:04:38
○MXmail2.jwharmston.com2015-06-16 → 2016-04-10 · 4 obs
● 2015-06-16 12:59:52
● 2016-04-10 09:55:24
○ 2016-09-24 18:14:02
○ 2026-05-14 14:04:38
○A81.174.250.2202015-06-16 → 2016-04-10 · 4 obs
● 2015-06-16 12:59:52
● 2016-04-10 09:55:24
○ 2016-09-24 18:14:02
○ 2026-05-14 14:04:38
●A91.207.50.302026-04-19 → 2026-05-14 · 3 obs
○ 2017-09-19 04:36:06
● 2026-04-19 13:09:28
● 2026-05-14 14:04:38
○A91.207.50.402016-09-24 → 2016-09-24 · 4 obs
○ 2016-04-10 09:55:24
● 2016-09-24 18:14:02
○ 2017-09-19 04:36:06
○ 2026-05-14 14:04:38
○A91.207.50.702017-09-19 → 2017-09-19 · 4 obs
○ 2016-09-24 18:14:02
● 2017-09-19 04:36:06
○ 2026-04-19 13:09:28
○ 2026-05-14 14:04:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
jwharmston.comns1.penguin-uk.net, ns2.penguin-uk.net, ns3.penguin-uk.net-

✅ Authoritative Response

Server:91.207.50.253

NS records: ns1.penguin-uk.net, ns2.penguin-uk.net, ns3.penguin-uk.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for jwharmston.com (unsigned zone)

⏱️ Timing

Total: 553ms | Queries: -

📄 Records

TypeCountSample Data
A191.207.50.30
NS3ns1.web-dns.net, ns3.web-dns.net...
MX1jwharmston.com (pri: 0)
TXT1v=spf1 +a +mx +ip4:91.207.50.30 ~all
SOA1ns1.web-dns.net jason.slnl.co.uk

Analysis

Hierarchy

The parent of mail.jwharmston.com is jwharmston.com.

Mail Server Role

jwharmston.com serves as the mail server for jwharmston.com.

IP Addresses

jwharmston.com points to IP number: 91.207.50.30.

Other host names such as jamesgraphics.co.uk, ainslie.org, mail.studentaccommodationyork.co.uk, bpnl.co.uk and tubtrug.com share IPs with jwharmston.com.

Name Servers

jwharmston.com is delegated to six name servers: ns1.penguin-uk.net, ns2.penguin-uk.net, ns3.penguin-uk.net, ns1.web-dns.net, ns2.web-dns.net and ns3.web-dns.net.

jwharmston.com at least partially shares name servers with other domains, for instance truthdepartment.com, restorativewales.org.uk, pvtv.co.uk, inverclydecarerscentre.org.uk and snakemaker.org.

these name servers are commonly used with ns1.domainsforall.co.uk, ns2.domainsforall.co.uk, ns1.3awebhosting.com and ns2.3awebhosting.com.

Host names with a single IP

ns1.penguin-uk.net points to 91.207.50.253

ns2.penguin-uk.net points to 91.207.51.253

ns3.penguin-uk.net points to 172.187.240.241

ns1.web-dns.net points to 91.207.50.253

ns2.web-dns.net points to 91.207.51.253

ns3.web-dns.net points to 172.187.240.241

Host names pointing to 91.207.50.253: ns1.penguin-uk.net and ns1.web-dns.net

Host names pointing to 91.207.51.253: ns2.penguin-uk.net and ns2.web-dns.net

Host names pointing to 172.187.240.241: ns3.penguin-uk.net and ns3.web-dns.net

Mail Servers

jwharmston.com is handled by a single mail server, jwharmston.com.

jwharmston.com points to a single IP: 91.207.50.30.