Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bigtincan.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:10:27 UTC · ↺ Refresh
MX Hostnames
- aspmx.l.google.com
- alt4.aspmx.l.google.com
- alt3.aspmx.l.google.com
- alt2.aspmx.l.google.com
- alt1.aspmx.l.google.com
MX Priorities
- alt4.aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
- alt3.aspmx.l.google.com: 10
A / AAAA Records
- 76.76.21.21
Mail Server IPs
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 64.233.180.27 ↩ on-in-f27.1e100.net
- 2607:f8b0:4004:c17::1b ↩ bl-in-f27.1e100.net
- 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
SOA Record
Raw SOA
ns-991.awsdns-59.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-991.awsdns-59.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1832.awsdns-37.co.uk
ns-25.awsdns-03.com
ns-991.awsdns-59.net
ns-1185.awsdns-20.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:52.62.85.42 include:_spf.brainshark.com include:_spf.google.com include:_spf.salesforce.com include:mail.zendesk.com include:sendgrid.net include:amazonses.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; fo=1; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
16 records- MS=ms33119823
- MS=ms52269357
- MS=ms75235522
- aff75453-32bc-493c-9316-58a6202ebaf7
- docusign=80d7ae86-ef4f-4f75-8c16-65b88f5d89d9
- google-site-verification=VHCdGMIQ2172fLHIkBTC8Wz6-Kfcacp-iW08qOplFHo
- google-site-verification=cKwMEnFS1BG-Sw3Lh93BFOFK3LYK0bJmemy3rToycVs
- google-site-verification=vjIiVzvn3cHLYKROYA1yi6oV6xLz1P9c-_PyVrxqgCg
- google-site-verification=wL3Ioem5VWY2OLVM5RfQ8UuYTS51rq3heRsOvBYmo0k
- hubspot-developer-verification=YWE4ZmUyMTgtNDY0NC00NTc1LTljNjktNWEzMjJlZDg0Njcw
- knowbe4-site-verification=94cfe3bc0ad258bdffb54f855d8c4505
- p8mmfd4aqcmn8ugpvg28qgdoa9
- secureframe-domain-verification-x3bbng=LYuL0qLmrRjM4v26XzP7W5ITs
- SPFv=spf1 ip4:52.62.85.42 include:_spf.brainshark.com include:_spf.google.com include:_spf.salesforce.com include:mail.zendesk.com include:sendgrid.net include:amazonses.com -all
- zoom-domain-verification=ZOOM_verify_635dcb9ecdf94f9fa02ffb023a860b8d
- MS=ms15465311
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 bigtincan.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits