Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sttc.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 02:17:08 UTC · ↺ Refresh
MX Hostnames
- mail.sttc.com
MX Priorities
- mail.sttc.com: 10
A / AAAA Records
- 35.212.92.188 ↩ 188.92.212.35.bc.googleusercontent.com
Mail Server IPs
- 216.164.195.57 ↩ servicetireips10.s.subnet.rcn.com
SOA Record
Raw SOA
ns83.worldnic.com namehost.worldnic.com 126012713 10800 3600 604800 3600
Primary NS (mname)
ns83.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126012713
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns83.worldnic.com
ns84.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:216.164.195.57 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- google-site-verification=5phOInZKl8z6VT09islM7tzay1b7i1L013Q-JabOB84
- SPFv=spf1 ip4:216.164.195.57 -all
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