Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
investdns.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 04:38:30 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx2.googlemail.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- aspmx3.googlemail.com
MX Priorities
- aspmx3.googlemail.com: 30
- aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 20
- alt1.aspmx.l.google.com: 20
- aspmx2.googlemail.com: 30
A / AAAA Records
- 193.239.45.75 ↩ grid08.agnat.pl
Mail Server IPs
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 142.251.16.27 ↩ bl-in-f27.1e100.net
- 2607:f8b0:4004:c08::1a ↩ bi-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
SOA Record
Raw SOA
ns1.domena.pl hosting.agnat.pl 2026010247 7200 1800 604800 3600
Primary NS (mname)
ns1.domena.pl
Admin Email (rname)
hosting@agnat.pl
Serial
2026010247
Refresh
7200s
Retry
1800s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.domena.pl
ns3.domena.pl
ns2.domena.pl
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:_spf.google.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 investdns.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits