Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zephyronline.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 23:46:23 UTC · ↺ Refresh
MX Hostnames
- zephyronline-com.mail.protection.outlook.com
MX Priorities
- zephyronline-com.mail.protection.outlook.com: 0
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8001::3 (no PTR)
- 2620:12a:8000::3
Mail Server IPs
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f804::3 ↩ mail-co1pr03cu00403.inbound.protection.outlook.com
- 2a01:111:f403:f913::1 ↩ mail-cy5pr05cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c91d::b ↩ mail-mw2pr02cu00603.inbound.protection.outlook.com
SOA Record
Raw SOA
fred.ns.cloudflare.com dns.cloudflare.com 2399370559 10000 2400 604800 1800
Primary NS (mname)
fred.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399370559
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
fred.ns.cloudflare.com
piper.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:107.180.51.233 ip4:107.180.27.127 ip4:35.131.3.77 ip4:35.131.3.173 ip4:209.96.183.123 include:spf.protection.outlook.com include:spf.sendinblue.com include:secureserver.net include:mail.zendesk.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; ruf=mailto:[email protected]; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
3 records- SPFv=spf1 ip4:107.180.51.233 ip4:107.180.27.127 ip4:35.131.3.77 ip4:35.131.3.173 ip4:209.96.183.123 include:spf.protection.outlook.com include:spf.sendinblue.com include:secureserver.net include:mail.zendesk.com -all
- Sendinblue-code:02a2b4ea43962167da713b98a8054b64
- google-site-verification=ET8xDc8b1qw4oe8Xr-g6mRUzWqZqMW6hSPC17CCI748
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 zephyronline.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits