Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
firstcoastcardio.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 00:28:07 UTC · ↺ Refresh
MX Hostnames
- firstcoastcardio-com.mail.protection.outlook.com
MX Priorities
- firstcoastcardio-com.mail.protection.outlook.com: 10
A / AAAA Records
- 34.174.85.204 ↩ 204.85.174.34.bc.googleusercontent.com
Mail Server IPs
- 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
- 2a01:111:f403:f90b:: ↩ mail-bn6pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.carrierzone.com postmaster.carrierzone.com 2026031914 86400 86400 3600000 86400
Primary NS (mname)
ns1.carrierzone.com
Admin Email (rname)
postmaster@carrierzone.com
Serial
2026031914
Refresh
86400s
Retry
86400s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1.carrierzone.com
ns2.carrierzone.com
ns3.carrierzone.com
ns4.carrierzone.com
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a ip4:173.224.64.116/32 ip4:173.224.64.100/32 include:mailgun.org include:spf.protection.outlook.com include:spf.myconnectwise.net ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]; aspf=r; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
6 records- r3ag3iqpdlcjcec9f2vcjj23ri
- pmme28kidkbgo0jpj822c7d292
- rbg7nes6hdh0hlgi22l3jfn4jq
- knowbe4-site-verification=90f236c147114224f69f483465c7e9e4
- SPFv=spf1 mx a ip4:173.224.64.116/32 ip4:173.224.64.100/32 include:mailgun.org include:spf.protection.outlook.com include:spf.myconnectwise.net ~all
- so16f4rfa9f3h4ejahmsi0s5ji
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