3ntropy.net

Valid Email Server
Domain Lookup › 3ntropy.net

Domain Overview

DNS: ✓ 5d ago Checker: ✓ 5d ago
3ntropy.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-06-16 02:55:10 UTC · ↺ Refresh

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MX Hostnames

  • 3ntropy-net.mail.protection.outlook.com

MX Priorities

  • 3ntropy-net.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.69.241 (no PTR)
  • 104.26.12.29 (no PTR)
  • 104.26.13.29
  • 2606:4700:20::681a:c1d
  • 2606:4700:20::681a:d1d
  • 2606:4700:20::ac43:45f1

Mail Server IPs

  • 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
  • 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
  • 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
  • 52.101.40.6 ↩ mail-cy1pr03cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
  • 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
  • 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com

SOA Record

Raw SOA linda.ns.cloudflare.com dns.cloudflare.com 2405776685 10000 2400 604800 1800
Primary NS (mname)
linda.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2405776685
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

noel.ns.cloudflare.com
linda.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; aspf=r;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

DKIM Selectors

✓ 1 found
mail._domainkey
⚠ Public key (p=) missing in DKIM record for selector mail.

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

All TXT Records

9 records
  • MS=ms46055672
  • MS=ms78192598
  • apple-domain-verification=QFjngaGZdK13alMv
  • apple-domain-verification=XDfuri0UQq4QUQws
  • ciscocidomainverification=78308355a13a3723ce458948d63fa70cbf571471b9684f88dc7157622a7d4213
  • google-site-verification=84yqKL0RUAkwqOjsiAsOvr2ymLmx5oPzDqP4jT6hYBE
  • openai-domain-verification=dv-6yjiHJgfQHqzJLGBFAHn0xEF
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • SPFv=spf1include:spf.protection.outlook.com-all
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