Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
asta-usa.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 13:13:20 UTC · ↺ Refresh
MX Hostnames
- astausa-com01b.mail.protection.outlook.com
MX Priorities
- astausa-com01b.mail.protection.outlook.com: 10
A / AAAA Records
- 104.21.16.27 (no PTR)
- 172.67.165.253 (no PTR)
- 2606:4700:3034::6815:101b
- 2606:4700:3031::ac43:a5fd
Mail Server IPs
- 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:f902::2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
SOA Record
Raw SOA
joselyn.ns.cloudflare.com dns.cloudflare.com 2398942477 10000 2400 604800 1800
Primary NS (mname)
joselyn.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398942477
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
maciej.ns.cloudflare.com
joselyn.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 +ip4:199.189.224.78 include:relay.mailchannels.net include:astausa123.onmicrosoft.com include:servers.mcsv.net include:spf.mandrillapp.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- _globalsign-domain-verification=a9bahj271MzYOreylHQzlMsu96zRGXDL-6TGSlSXaV
- google-site-verification=_wp1GMAIKRurLtSwN27LkybHAgPc-bPT-WxVzWaCxi4
- SPFv=spf1 +ip4:199.189.224.78 include:relay.mailchannels.net include:astausa123.onmicrosoft.com include:servers.mcsv.net include:spf.mandrillapp.com -all
- MS=MS91150305
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for asta-usa.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits