Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
blackdogcomputer.net
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 22:28:51 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- mail.blackdogcomputer.net
- aspmx.l.google.com
MX Priorities
- alt1.aspmx.l.google.com: 25
- aspmx.l.google.com: 20
- mail.blackdogcomputer.net: 30
A / AAAA Records
- 173.66.229.17 ↩ static-173-66-229-17.washdc.fios.verizon.net
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 142.250.31.27 ↩ bj-in-f27.1e100.net
- 2607:f8b0:4004:c23::1a ↩ yuiadrs-in-f26.1e100.net
- 173.66.229.17 ↩ static-173-66-229-17.washdc.fios.verizon.net
SOA Record
Raw SOA
ns49.worldnic.com namehost.worldnic.com 126031916 10800 3600 604800 3600
Primary NS (mname)
ns49.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126031916
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns50.worldnic.com
ns49.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; pct=50; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
⚠ Policy applies to 50% of failing messages only
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
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