b89.io

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
b89.io
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-29 10:46:50 UTC · ↺ Refresh

MX Hostnames

  • b89-io.mail.protection.outlook.com

MX Priorities

  • b89-io.mail.protection.outlook.com: 0

A / AAAA Records

  • 172.67.196.139 (no PTR)
  • 104.21.12.230 (no PTR)
  • 2606:4700:3036::6815:ce6
  • 2606:4700:3037::ac43:c48b

Mail Server IPs

  • 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
  • 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
  • 2a01:111:f403:c902::3 ↩ mail-sj0pr03cu01703.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA desi.ns.cloudflare.com dns.cloudflare.com 2400206536 10000 2400 604800 1800
Primary NS (mname)
desi.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400206536
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

thaddeus.ns.cloudflare.com
desi.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:mail.zendesk.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

12 records
  • n4jgdkk4myfkh3y3lx48z2l3lm06hbp0
  • postman-domain-verification=5fb96d5aed21e1a1ad754566a3a0b449e3324e20a6e31b9a4d8d4c21add0359ea6d0ff7a39cbce9e41ac37166056ae6e5e45d57769152807f41ea50ee27d4f91
  • SPFv=spf1 include:_spf.google.com include:mail.zendesk.com include:spf.protection.outlook.com ~all
  • MS=D7018971A17B391A3B38451B1184B9FDFDDF18B0
  • MS=ms77800595
  • _globalsign-domain-verification=yBi3imnz5sYfzOUTeT9C_5FSxYbdU8AtBU0xxrLckm
  • amazonses:tM5g2qsxtO8z95mbKOrPegqR/xKrmeSPmSkYbm19uG4=
  • atlassian-domain-verification=hu3qns3bAjWhVBQQP7Jm0RyYFW90H83EfyCre5jzst55RRT9/jfXMAXE3H1AQkl6
  • cp8eBUQZtPQ/nokfnpoeYAZ4VYpyMkra6sGkv+PT3xg=
  • google-site-verification=cDv5Y8j1z4Og-zgmr9rQvjIF4PPiMyhBFVduedon7mk
  • google-site-verification=i24ZdLERR_JFaExJQFpu_o3PX6WEB06mHEMginZbJBU
  • j8ql76n.x.incapdns.net
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