sentinel-media.dk is a .dk domain served by 2 nameservers (april.ns.cloudflare.com, vin.ns.cloudflare.com). It was registered on 23 September 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.69.133 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.69.133 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.208.185 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:d0b9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:4585 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.69.133,172.67.208.185 ech=AEX+DQBBUAAgACCp/3/EGAG9qXNHV51RKXanrenMlsge1uK0fIu7E6ZfHwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:d0b9,2606:4700:3036::6815:4585 |
| TXT Record |
|---|
| protonmail-verification=371c2f3ba7ea9d393a51a0ed855c93ee2716d48a |
| v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (sentinel-media.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (_dmarc.sentinel-media.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | Exists, no address |
| www vs bare domain | www does not resolve sentinel-media.dk: 104.21.69.133 172.67.208.185 2606:4700:3034::ac43:d0b9 2606:4700:3036::6815:4585 (AS13335) (all like this)www.sentinel-media.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY |
DNS lookups: 3/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417429234 |
| Primary NS (MNAME) | april.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 | 2018-09-23 |
| Expires | 2027-09-30 (339d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 19:43:45 | 2584ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-14 18:56:47 shown | 1650ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-27 08:46:45 | 2581ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-23 12:06:51 | 782ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-17 20:06:42 | 2332ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-28 18:58:09 | 1998ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-26 16:37:33 | 877ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-25 19:19:56 | 718ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-15 13:49:19 | 1421ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-07 21:23:36 | 1436ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-19 03:04:08 | 10248ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-12 18:19:35 | 1445ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-28 12:14:37 | 969ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-18 06:43:09 | 1053ms | 2 NS 2 A 2 MX | 🔓 Insecure |