Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fieldworker.pl
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 12:24:20 UTC · ↺ Refresh
MX Hostnames
- fieldworker-pl.mail.protection.outlook.com
MX Priorities
- fieldworker-pl.mail.protection.outlook.com: 0
A / AAAA Records
- 85.128.223.182 ↩ shared-ann182.rev.nazwa.pl
Mail Server IPs
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
- 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
- 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.nazwa.pl biuro.nazwa.pl 2008133264 28800 7200 604800 86400
Primary NS (mname)
ns1.nazwa.pl
Admin Email (rname)
biuro@nazwa.pl
Serial
2008133264
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns3.nazwa.pl
ns1.nazwa.pl
ns2.nazwa.pl
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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- MS=ms89305930
- SPFv=spf1 include:spf.protection.outlook.com -all
- 6ec50f3bce03ab2838d2c0fba63a9c0ee35060f644257e844a2234d5e78b4a39
- google-site-verification=r1AmtU8iV1XTe6M3unmXytSKC7xy_f6C3R9BAYN9Fas
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 fieldworker.pl
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits