prb.org

Valid Email Server
Domain Lookup › prb.org

Domain Overview

DNS: ✓ 2d ago Checker: ✓ 2d ago
prb.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-07-01 04:40:07 UTC · ↺ Refresh

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MX Hostnames

  • prb-org.mail.protection.outlook.com

MX Priorities

  • prb-org.mail.protection.outlook.com: 0

A / AAAA Records

  • 136.114.143.119 ↩ 119.143.114.136.bc.googleusercontent.com

Mail Server IPs

  • 52.101.41.4 ↩ mail-sj2pr05cu00204.inbound.protection.outlook.com
  • 52.101.194.3 ↩ mail-ch1pr04cu00103.inbound.protection.outlook.com
  • 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
  • 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
  • 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com

SOA Record

Raw SOA ns-124.awsdns-15.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-124.awsdns-15.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-733.awsdns-27.net
ns-1150.awsdns-15.org
ns-124.awsdns-15.com
ns-1962.awsdns-53.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 mx ip4:23.31.213.154 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org include:amazonses.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • 00D6A000000fReK=1TBRd0000000Ak9
  • openai-domain-verification=dv-XfcBLKa0mR2Qjr83cxgZtbuP
  • SPFv=spf1 mx ip4:23.31.213.154 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org include:amazonses.com ~all
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