Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
f5svcs.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 19:07:17 UTC · ↺ Refresh
MX Hostnames
- f5svcs-com.mail.protection.outlook.com
MX Priorities
- f5svcs-com.mail.protection.outlook.com: 0
A / AAAA Records
- 45.40.155.106 ↩ 106.155.40.45.host.secureserver.net
Mail Server IPs
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns01.sierradc.com hostmaster.sierrawowires.com 1697042479 3600 3600 14400 3600
Primary NS (mname)
ns01.sierradc.com
Admin Email (rname)
hostmaster@sierrawowires.com
Serial
1697042479
Refresh
3600s
Retry
3600s
Expire
14400s
Minimum TTL
3600s
Nameservers (NS)
ns02.sierradc.com
ns01.sierradc.com
ns03.sierradc.com
SPF Record
✓ Strict (-all)
v=spf1 include:secureserver.net include:spf.mailjet.com include:spf.smtp2go.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
4 records- obi7u3hse7qtlqi69j24g2mo1p
- uqse29tbckn9u075pmdq4ej4fc
- NETORGFT2844811.onmicrosoft.com
- SPFv=spf1 include:secureserver.net include:spf.mailjet.com include:spf.smtp2go.com -all
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