Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nicolsonobrien.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-22 01:46:37 UTC · ↺ Refresh
MX Hostnames
- nicolsonobrien-co-uk.mail.protection.outlook.com
- ALT2.ASPMX.L.GOOGLE.com
MX Priorities
- nicolsonobrien-co-uk.mail.protection.outlook.com: 1
- alt2.aspmx.l.google.com: 5
A / AAAA Records
- 217.16.208.147
Mail Server IPs
- 52.101.99.2 ↩ mail-cwxp265cu00502.inbound.protection.outlook.com
- 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
- 52.101.89.2 ↩ mail-lo3p265cu00302.inbound.protection.outlook.com
- 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
- 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::2 ↩ mail-lo0p265cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
SOA Record
Raw SOA
dns0.scotnet.co.uk ian.scotnet.co.uk 2014050514 43200 7200 604800 900
Primary NS (mname)
dns0.scotnet.co.uk
Admin Email (rname)
ian@scotnet.co.uk
Serial
2014050514
Refresh
43200s
Retry
7200s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
dns1.scotnet.net
dns2.scotnet.co.uk
dns0.scotnet.co.uk
dns1.scotnet.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- ms25880754
- SPFv=spf1 include:spf.protection.outlook.com -all
- google-site-verification=qe8uEW3TJWik0SuyXNdgWckMZZxS69laYt_Eke7ewLY
- google-site-verification=Xu0uvWjaC72bMG3ZtPmosrCZ0aZ5JJ4IOeeUWz3GI70
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 nicolsonobrien.co.uk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits