astrion.us

Valid Email Server

Domain Overview

DNS: โœ“ 2mo ago Checker: โœ“ 2mo ago
astrion.us
Yes
โœ“ Yes
Unknown
No
No
โš  Yes
No
No
Did you mean: [email protected]

Checked via [email protected] ยท 2026-03-30 02:38:28 UTC ยท โ†บ Refresh

MX Hostnames

  • astrion.mail.protection.office365.us

MX Priorities

  • astrion.mail.protection.office365.us: 0

A / AAAA Records

  • 192.0.66.43 (no PTR)

Mail Server IPs

  • 23.103.199.138 โ†ฉ mail-bn3usg020138.inbound.protection.outlook.com
  • 23.103.199.170 โ†ฉ mail-cy1usg020170.inbound.protection.outlook.com
  • 2001:489a:2202:5::10 โ†ฉ mail-cy1usg020010.inbound.protection.outlook.com
  • 2001:489a:2202:4::10 โ†ฉ mail-bn3usg020010.inbound.protection.outlook.com

SOA Record

Raw SOA ns45.domaincontrol.com dns.jomax.net 2026032600 28800 7200 604800 600
Primary NS (mname)
ns45.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026032600
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns45.domaincontrol.com
ns46.domaincontrol.com

SPF Record

โœ“ Strict (-all)
v=spf1 include:spf.protection.office365.us include:_spf.ultipro.com include:spf.zohomail360.com include:mailgun.org -all
๐Ÿ“Š DNS lookups: 4/10
โœ“ Hard fail (-all) โ€” strict enforcement

DMARC Record

โœ— p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]
โš  p=none โ€” monitoring only, no enforcement
๐Ÿ“‹ SPF alignment: Relaxed ยท DKIM alignment: Relaxed
๐Ÿ“ง Reports โ†’ mailto:[email protected]

DKIM Selectors

โœ“ 3 found
selector1._domainkey
selector2._domainkey
k1._domainkey
โœ“ Public key: 392 chars (valid)
โœ“ DKIM properly configured for selector: selector1

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

All TXT Records

10 records
  • _jgo5lma29lg4novgt406417j1l1as6v
  • SPFv=spf1 include:spf.protection.office365.us include:_spf.ultipro.com include:spf.zohomail360.com include:mailgun.org -all
  • 5fkkhdodklfpl8almgear32kkk
  • adobe-idp-site-verification=21453f09801b348eeb019627ace413dd74def0afe2b675fdf536ac6e64da8870
  • knowbe4-site-verification=1a67250a472efeeef4ee43dce20872d1
  • openai-domain-verification=dv-cbDMm4yxwI0hwY6y3WcVMNQo
  • rsf63sok85vm6pk07pbg54u8t8
  • MS=ms41624147
  • ibmid=8d6d4845-a0fb-4f72-a9b7-c726daca7417
  • parallels-domain-verification=67e7a21dfd7840cea0b7caedfac0749b9ab7c97ff15b4a2191afdde784160129
Free ยท No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts โ€” unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code ยท Works on any site
See demo & docs
Deep verification
Full email verification for astrion.us

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits