Domain Overview
DNS: ✓ just now
Checker: ✓ just now
tele.dk
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-06-02 00:57:00 UTC · ↺ Refresh
MX Hostnames
- mailgrinder.tdc.dk
MX Priorities
- mailgrinder.tdc.dk: 10
A / AAAA Records
- 3.125.131.179 ↩ ec2-3-125-131-179.eu-central-1.compute.amazonaws.com
- 18.193.144.171 ↩ ec2-18-193-144-171.eu-central-1.compute.amazonaws.com
- 18.192.246.145 ↩ ec2-18-192-246-145.eu-central-1.compute.amazonaws.com
Mail Server IPs
- 193.3.142.155 ↩ mailgrinder.tdc.dk
SOA Record
Raw SOA
auth01.ns.tele.dk dns.eng.tdc.net 2025121000 3600 1800 3600000 7200
Primary NS (mname)
auth01.ns.tele.dk
Admin Email (rname)
dns@eng.tdc.net
Serial
2025121000
Refresh
3600s
Retry
1800s
Expire
3600000s
Minimum TTL
7200s
Nameservers (NS)
auth01.ns.tele.dk
auth02.ns.tele.dk
ns-soa.darenet.dk
SPF Record
✓ Strict (-all)
v=spf1 ip4:193.3.142.155 -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
1 record- SPFv=spf1 ip4:193.3.142.155 -all
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 tele.dk
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits