Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ctbc.ca
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 20:10:08 UTC · ↺ Refresh
MX Hostnames
- ctbc.ca
MX Priorities
- ctbc.ca: 0
A / AAAA Records
- 72.251.7.108 ↩ ip108.ip-72-251-7.net
Mail Server IPs
- 72.251.7.108 ↩ ip108.ip-72-251-7.net
SOA Record
Raw SOA
cloud1.whc.ca info.whc.ca 2026021603 1440 1440 3600000 86400
Primary NS (mname)
cloud1.whc.ca
Admin Email (rname)
info@whc.ca
Serial
2026021603
Refresh
1440s
Retry
1440s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
cloud1.whc.ca
cloud2.whc.ca
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:72.251.3.234 include:spf.web-dns1.com +a +mx ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 ip4:72.251.3.234 include:spf.web-dns1.com +a +mx ~all
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