frederiksen-scientific.dk is a .dk domain served by 2 nameservers (emerson.ns.cloudflare.com, jean.ns.cloudflare.com). It was registered on 24 October 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.10.249 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by frederiksenscientific-dk02i.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this 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 |
|---|---|---|---|---|---|---|---|
| 104.26.10.249 | 300s | — | AS13335 | Cloudflare, Inc. | 104.26.0.0/20 | — | — |
| 104.26.11.249 | 300s | — | AS13335 | Cloudflare, Inc. | 104.26.0.0/20 | — | — |
| 172.67.71.48 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.64.0/18 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:20::681a:af9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| 2606:4700:20::681a:bf9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| 2606:4700:20::ac43:4730 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.26.10.249,104.26.11.249,172.67.71.48 ipv6hint=2606:4700:20::681a:af9,2606:4700:20::681a:bf9,2606:4700:20::ac43:4730 |
| TXT Record |
|---|
| google-site-verification=kXIZ8yvvwpIXeyc5iu7LqhVitbJl_hOqI8x-noZz1sA |
| google-site-verification=Rnb5AoqUh3xPfOz4_A8SKsIsMlKjqPGUtjADjQ0LiIw |
| spf.npstoday.com |
| v=spf1 include:spf.mentor-it.dk include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:servers.mcsv.net include:acemdns.com a:owa.frederiksen.eu ip4:167.89.108.1 ip4:167.89.108.13 ip4:167.89.92.35 ip4:176.62.207.99 include:spf.flowmailer.net -all |
| Policy | Record (frederiksen-scientific.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.mentor-it.dk include:spf.protection.outlook.com include:spf.eu.exclaimer.net include:servers.mcsv.net include:acemdns.com a:owa.frederiksen.eu ip4:167.89.108.1 ip4:167.89.108.13 ip4:167.89.92.35 ip4:176.62.207.99 include:spf.flowmailer.net -all |
| Policy | Record (_dmarc.frederiksen-scientific.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; rf=afrf; pct=100; ri=86400 |
| www | 104.26.10.249 104.26.11.249 172.67.71.48 2606:4700:20::681a:af9 2606:4700:20::681a:bf9 2606:4700:20::ac43:4730 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network frederiksen-scientific.dk: 104.26.10.249 104.26.11.249 172.67.71.48 2606:4700:20::681a:af9 (AS13335) www.frederiksen-scientific.dk: 104.26.10.249 104.26.11.249 172.67.71.48 2606:4700:20::681a:af9 (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-frederiksenscientific-dk02i._domainkey.frederiksen.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: 7/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2411915627 |
| Primary NS (MNAME) | emerson.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 | 2019-10-24 |
| Expires | 2026-10-31 (4d) |
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 |
|---|---|
| experimentum.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 20:54:40 | 966ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-10-01 16:22:27 | 1700ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-09-23 14:41:56 | 1154ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-09-19 16:06:33 | 1422ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-09-13 06:51:31 | 1700ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-08-12 21:53:16 shown | 2442ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-07-23 09:44:40 | 3024ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-06-22 23:15:29 | 10175ms | 2 NS 3 A 1 MX | 🔓 Insecure |
| 2026-06-22 11:14:44 | 1187ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 09:42:00 | 787ms | 2 NS 3 A 1 MX | 🔓 Insecure |