Domain Overview
DNS: ✓ 17d ago
Checker: ✓ 17d ago
upkbs.ch
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-09-10 17:52:25 UTC · ↺ Refresh
MX Hostnames
- mailgw02.usb.ch
- mailgw01.usb.ch
MX Priorities
- mailgw01.usb.ch: 10
- mailgw02.usb.ch: 10
A / AAAA Records
- 185.221.40.25 ↩ web65.internezzo.ch
- 2a09:f00:b:1::9 ↩ web65.internezzo.ch
Mail Server IPs
- 145.250.210.44 ↩ mailgw01.usb.ch
- 145.250.210.45 ↩ mailgw02.usb.ch
SOA Record
Raw SOA
dnsext.uhbs.ch netzwerk.usb.ch 165 3600 1800 2419200 900
Primary NS (mname)
dnsext.uhbs.ch
Admin Email (rname)
netzwerk@usb.ch
Serial
165
Refresh
3600s
Retry
1800s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
scsnms.switch.ch
dnsext.uhbs.ch
SPF Record
✓ Strict (-all)
v=spf1 a:web15.internezzo.ch a:webmail01.endurit.com ip4:145.250.210.36/31 ip4:145.250.210.44/31 include:spf.peoplexs.com include:spf.qb-feedback.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a:web15.internezzo.ch a:webmail01.endurit.com ip4:145.250.210.36/31 ip4:145.250.210.44/31 include:spf.peoplexs.com include:spf.qb-feedback.com -all
- MS=3403D2AA1E55A8FB3A1FC97F4E08DB533421B45A
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 upkbs.ch
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits