classroominc.org

Valid Email Server
Domain Lookup › classroominc.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
classroominc.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 15:39:39 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 44.208.197.130 ↩ ec2-44-208-197-130.compute-1.amazonaws.com

Mail Server IPs

  • 52.101.11.10 ↩ mail-sa9pr03cu00202.inbound.protection.outlook.com
  • 52.101.9.26 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
  • 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
  • 52.101.9.12 ↩ mail-bl0pr05cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:c902:: ↩ mail-sj2pr05cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com

SOA Record

Raw SOA ns37.worldnic.com namehost.worldnic.com 123081105 10800 3600 604800 3600
Primary NS (mname)
ns37.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
123081105
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns38.worldnic.com
ns37.worldnic.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.act-on.net ip4:108.30.171.181 include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

6 records
  • google-site-verification=7vZFBURYTi2WpK5dK-Qt_6Uzjhh4j5eMQqO35SgLxZ0
  • google-site-verification=Qj6kkSKZlZ9KjRhecWbwPAVx5QF6AMLX_2NI9tKsmE4
  • google-site-verification=Mp1tvzse8uUoYECxrWEeMzAWoq0iDaW0dcQq502GGqw
  • MS=ms36883486
  • SPFv=spf1 include:_spf.act-on.net ip4:108.30.171.181 include:spf.protection.outlook.com ~all
  • 43664kgjq51edt8n3fdq506p6
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