Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rkmissioncritical.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 17:06:05 UTC · ↺ Refresh
MX Hostnames
- rkmissioncritical-com.mail.protection.outlook.com
MX Priorities
- rkmissioncritical-com.mail.protection.outlook.com: 10
A / AAAA Records
- 198.202.211.1 (no PTR)
Mail Server IPs
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.11.13 ↩ mail-sn1pr0501cu00205.inbound.protection.outlook.com
- 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns71.worldnic.com namehost.worldnic.com 126030715 10800 3600 604800 3600
Primary NS (mname)
ns71.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126030715
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns72.worldnic.com
ns71.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.constantcontact.com include:spf.ess.barracudanetworks.com include:spf.exclaimer.net include:res.cisco.com ip4:50.232.231.128/29 ip4:66.18.116.43 ip4:67.227.199.87 ip4:204.10.44.254 ip4:205.207.106.0/24 ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
5 records- atlassian-domain-verification=Ys/HaxPzlpwV9QA/eIPHmPZ/vvetkphuo1hFcu3I70A/i5TY7Pn3gQUU1KR8J/iy
- openai-domain-verification=dv-BmkbIPIR0b2R0PULaML9kMFg
- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.constantcontact.com include:spf.ess.barracudanetworks.com include:spf.exclaimer.net include:res.cisco.com ip4:50.232.231.128/29 ip4:66.18.116.43 ip4:67.227.199.87 ip4:204.10.44.254 ip4:205.207.106.0/24 ~all
- google-site-verification=7Go5t2MEhoSEJ86e0FrtgKgdwtZAx7ooNzhZtrYZVPI
- google-gws-recovery-domain-verification=52639828
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