Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gcn.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-20 17:25:21 UTC · ↺ Refresh
MX Hostnames
- gcn-org.mail.protection.outlook.com
MX Priorities
- gcn-org.mail.protection.outlook.com: 0
A / AAAA Records
- 192.0.79.158 ↩ wordpress.com
Mail Server IPs
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 52.101.41.26 ↩ mail-sj0pr03cu01702.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
isaac.ns.cloudflare.com dns.cloudflare.com 2396478505 10000 2400 604800 1800
Primary NS (mname)
isaac.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396478505
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
isaac.ns.cloudflare.com
sharon.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:208.52.139.58 ip4:64.69.218.94 include:spf.protection.outlook.com include:_spf.salesforce.com include:servers.mcsv.net include:mail.zendesk.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rf=afrf;ri=86400; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 ip4:208.52.139.58 ip4:64.69.218.94 include:spf.protection.outlook.com include:_spf.salesforce.com include:servers.mcsv.net include:mail.zendesk.com -all
- google-site-verification=jzg8Lg4m5xfLkDNnOuWIqpmLdLDw4snGN_cI-yzoQIQ
Full email verification for gcn.org
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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