sumh.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 May 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.159.134.42 is hosted by Cloudflare, Inc. (AS13335) in United States. Mail is handled by sumh-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 162.159.134.42 | 600s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:7::a29f:862a | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/43 | 🇺🇸 United States | San Francisco |
| TXT Record |
|---|
| ca3-1e2f8c0ec53e490cbaa6e72be5829286 |
| v=spf1 mx a ip4:185.163.189.51 ip4:185.163.189.52 ip4:185.163.189.53 a:mail.hhdrift.dk include:xdchosting.dk include:relay.mailchannels.net include:spf.protection.outlook.com -all |
| Policy | Record (sumh.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a ip4:185.163.189.51 ip4:185.163.189.52 ip4:185.163.189.53 a:mail.hhdrift.dk include:xdchosting.dk include:relay.mailchannels.net include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.sumh.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none; adkim=r; aspf=r; rua=mailto:abuse@sumh.dk; ruf=mailto:abuse@sumh.dk; fo=0; pct=100; ri=86400 |
| www | 162.159.134.42 2606:4700:7::a29f:862a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network sumh.dk: 162.159.134.42 2606:4700:7::a29f:862a (AS13335) www.sumh.dk: 162.159.134.42 2606:4700:7::a29f:862a (AS13335) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-sumh-dk._domainkey.sumhdenmark.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 9/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sumh.dk | sumh.dk.kinstavalidation.app |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092001 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2008-05-16 |
| Expires | 2027-05-31 (218d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Domain | Registrar |
|---|---|
| fællesomfritiden.dk | DANDOMAIN A/S |
| ligelyst.dk | DANDOMAIN A/S |
| osonline.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-24 06:21:59 shown | 2930ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 02:13:32 | 9847ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 06:57:51 | 3572ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 02:16:22 | 1479ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 08:07:05 | 909ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 19:26:11 | 2659ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 23:04:07 | 1697ms | 2 NS 1 A 1 MX | 🔒 Secure |