Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
simpsongroup.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 05:28:45 UTC · ↺ Refresh
MX Hostnames
- simpsongroup-co-uk.mail.protection.outlook.com
MX Priorities
- simpsongroup-co-uk.mail.protection.outlook.com: 1
A / AAAA Records
- 173.208.49.203 (no PTR)
Mail Server IPs
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
SOA Record
Raw SOA
ns15.domaincontrol.com dns.jomax.net 2026021701 28800 7200 604800 600
Primary NS (mname)
ns15.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026021701
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns15.domaincontrol.com
ns16.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:159.242.67.240/29 ip4:82.145.54.146 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
7 records- NG5jJFcgTGGy6+VDptPxGPAVyUEZQNy812xxHvnZEJ3LwGD/OPaQ2EmwvjYeHdSLttlbFgRTb93eVwElUN1Rnw==
- atsU7Fkzr7r6XO230kVlaea7GKDGIdVEldlR9BIaMvVFNHXp75IuSl8FUoZOefnIZHUwFF9Oa+E2rRrzWbTS2w==
- n173cKKY7nuMW0Fbj32LGlDcydTguBN73faKJqCtxSEiQz0bCLgsdE0dQjisnHYpcateKNHGPBkNjBPoDfXvTA==
- h0khbcddu7uq2cpd10n8ql3udu
- SPFv=spf1 ip4:159.242.67.240/29 ip4:82.145.54.146 include:spf.protection.outlook.com -all
- MS=ms10403436
- b70856e5943c41608a5a99d7da9aebd7
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for simpsongroup.co.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits