semenco.dk is a .dk domain served by 2 nameservers (kayleigh.ns.cloudflare.com, ray.ns.cloudflare.com). It was registered on 21 November 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.24.138 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by semenco-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 |
|---|---|---|---|---|---|---|---|
| 104.21.24.138 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.218.247 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:188a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:daf7 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.24.138,172.67.218.247 ech=AEX+DQBBHQAgACC9Ugtkqn8ym7bw9yTe9pZEn/4PI5XboOhzDAnqC/5/YAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:188a,2606:4700:3035::ac43:daf7 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| i315j9+k//GJ7NaD7oxa6SSTW2Vxa6OoQZnnsUtMlngjk3l3ZIEAYzXkkVPApRBjFw9sV0p3zVOKpxlUQzDx0A== |
| MS=ms99970427 |
| v=spf1 include:mailgun.org include:spf.protection.outlook.com ~all |
| Policy | Record (semenco.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:mailgun.org include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.semenco.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; |
| www | 104.21.24.138 172.67.218.247 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network semenco.dk: 104.21.24.138 172.67.218.247 2606:4700:3032::6815:188a 2606:4700:3035::ac43:daf7 (AS13335) www.semenco.dk: 104.21.24.138 172.67.218.247 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-semenco-dk._domainkey.lindholding.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-semenco-dk._domainkey.lindholding.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: 6/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417625286 |
| Primary NS (MNAME) | kayleigh.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-11-21 |
| Expires | 2031-07-31 (1745d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 05:24:31 shown | 2765ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-30 11:12:12 | 911ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-29 23:44:35 | 1017ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-27 23:12:00 | 1039ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-24 06:08:05 | 1302ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-03 16:13:31 | 1222ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-29 21:01:22 | 2780ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-26 11:04:09 | 1899ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-06 23:58:59 | 2347ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-12 16:52:55 | 10910ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-06 14:33:36 | 4436ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-28 14:25:47 | 6806ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-22 01:08:47 | 1043ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 12:06:57 | 4880ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-17 13:15:12 | 1430ms | 2 NS 2 A 1 MX | 🔒 Secure |