Domain Overview
DNS: ✓ just now
Checker: ✓ just now
byphasse.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-23 09:52:48 UTC · ↺ Refresh
MX Hostnames
- byphasse-com.mail.protection.outlook.com
MX Priorities
- byphasse-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.166.101 (no PTR)
- 104.21.16.48 (no PTR)
- 2606:4700:3034::ac43:a665
- 2606:4700:3031::6815:1030
Mail Server IPs
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 52.101.91.153 ↩ mail-matpr04cu00101.inbound.protection.outlook.com
- 52.101.209.28 ↩ mail-cpjpr05cu00104.inbound.protection.outlook.com
- 2a01:111:f403:ca09::28 ↩ mail-am6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:c967::a ↩ mail-cpjpr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
mack.ns.cloudflare.com dns.cloudflare.com 2413604033 10000 2400 604800 1800
Primary NS (mname)
mack.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2413604033
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
selah.ns.cloudflare.com
mack.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com ip4:185.34.192.244 ip4:213.32.54.8 include:_spf.qp-mail.eu ip4:82.98.149.137 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate 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
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- google-site-verification=_7yWLQz6We7k-4xJbq5EKBuQ-FK2TGzPnXbWoR3fIAM
- SPFv=spf1 include:spf.protection.outlook.com ip4:185.34.192.244 ip4:213.32.54.8 include:_spf.qp-mail.eu ip4:82.98.149.137 ~all
- brevo-code:cf7946ff42def665dca189942333b6ec
- google-site-verification=5OQn-gb_Du1tOEFDg3xWiM8DnHj3y2Lb1D6ptDjt9Js
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 · Customize →
See demo & docs
Deep verification
Full email verification for byphasse.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits