4sac.co.uk

Valid Email Server
Domain Lookup › 4sac.co.uk

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
4sac.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 07:28:40 UTC · ↺ Refresh

MX Hostnames

  • 4sac-co-uk.mail.eo.outlook.com

MX Priorities

  • 4sac-co-uk.mail.eo.outlook.com: 5

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
  • 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::b ↩ mail-am7pr05cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com

SOA Record

Raw SOA oswold.obsidianinternet.co.uk domains.obsidianinternet.net 2024010304 3600 600 1209600 3600
Primary NS (mname)
oswold.obsidianinternet.co.uk
Admin Email (rname)
domains@obsidianinternet.net
Serial
2024010304
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

wuffles.obsidianinternet.co.uk
rincewind.obsidianinternet.co.uk
oswold.obsidianinternet.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 include:outlook.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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

2 records
  • MS=ms83320090
  • SPFv=spf1 include:outlook.com ~all
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 4sac.co.uk

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits