SurfaceMap › u › upc.nl

upc.nl

Checked 2026-10-22 16:50 UTC · first added 2026-10-21

!Check could not complete

Domain & DNS

error

26 passed 1 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation iNameservers !SOA iDNSSEC iRecords

Problems

!

Unusual SOA timers

SOA · retry 2h should be shorter than refresh 1h. Current values: refresh 1h, retry 2h, expire 1000h, negative TTL 1h.

#23

Recent checks

!

Full report

Domain & DNS report for upc.nl ›

Mail

warn

27 passed 3 warn 0 failed

Areas

✓SPF ✓DMARC ✓DKIM ✓DNSSEC !MX !TLS iBIMI

Problems

!

Hosts without IPv6

MX · The following MX hosts could not be resolved to IPv6 addresses: front.mail.ziggo.com

#11
!

Single MX host, no backup

MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.

#12
!

Not configured

TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.

#32

Recent checks

!

Full report

Mail report for upc.nl ›