Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gtmc.net
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-02 13:43:01 UTC · ↺ Refresh
MX Hostnames
- mx.gtmc.ispn.net
MX Priorities
- mx.gtmc.ispn.net: 10
A / AAAA Records
- 35.208.134.92 ↩ 92.134.208.35.bc.googleusercontent.com
Mail Server IPs
- 64.35.208.73 ↩ mx.gtmc.ispn.net
SOA Record
Raw SOA
ns1.gtmc.net mike.connections.net 2025111701 600 600 600 600
Primary NS (mname)
ns1.gtmc.net
Admin Email (rname)
mike@connections.net
Serial
2025111701
Refresh
600s
Retry
600s
Expire
600s
Minimum TTL
600s
Nameservers (NS)
ns2.gtmc.net
ns1.gtmc.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:64.35.208.0/20 ip6:2607:5800::/32 mx ip4:74.51.143.0/24 ip4:54.240.61.236 ip4:54.240.61.237 ip4:69.72.38.202 ip4:208.91.255.4 ip4:64.35.208.0/20 ip6:2607:5800::/32 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- google-site-verification=EZydnN4NVnDB3sgA4gp90MvTfWCKK6oFflSKEov-ewA
- h6qm7ip7gsr23hrqrb1su5b4nk
- SPFv=spf1 ip4:64.35.208.0/20 ip6:2607:5800::/32 mx ip4:74.51.143.0/24 ip4:54.240.61.236 ip4:54.240.61.237 ip4:69.72.38.202 ip4:208.91.255.4 ip4:64.35.208.0/20 ip6:2607:5800::/32 -all
- google-site-verification=v5rjt7eZ3pRsRNpk1W_Lif-DjB3fcKKa2QQb5XIMUzQ
- knowbe4-site-verification=fb570df1e3bce54a374144185c1cc98b
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 gtmc.net
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits