byensiderne.dk is a .dk domain served by 2 nameservers (poppy.ns.cloudflare.com, zac.ns.cloudflare.com). It was registered on 20 March 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.58.252 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| poppy.ns.cloudflare.com | — | — | — |
| zac.ns.cloudflare.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.58.252 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.166.133 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:a685 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:3afc | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.58.252,172.67.166.133 ech=AEX+DQBB6gAgACBAk7biNGguDhfElDNDlBhA4bndbZdx+H8iOS6FUr6nJQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:a685,2606:4700:3035::6815:3afc |
| TXT Record |
|---|
| v=spf1 include:_spf.simply.com include:amazonses.com -all |
| Policy | Record (byensiderne.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.simply.com include:amazonses.com -all |
| Policy | Record (_dmarc.byensiderne.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:ac9788d7592d451a962eaf10bdeaaaef@dmarc-reports.cloudflare.net; adkim=s; aspf=s |
| www | 188.114.96.1 188.114.97.1 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network byensiderne.dk: 188.114.96.1 188.114.97.1 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.byensiderne.dk: 188.114.96.1 188.114.97.1 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | Revoked (empty key) |
| dkim | — | Revoked (empty key) |
| k1 | — | Revoked (empty key) |
| — | Revoked (empty key) | |
| s1 | — | Revoked (empty key) |
| s2 | — | Revoked (empty key) |
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: 2/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| 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 | 2407008984 |
| Primary NS (MNAME) | poppy.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-03-20 |
| Expires | 2027-03-19 (148d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 04:53:13 | 2364ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 03:17:15 | 632ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-16 22:43:13 | 910ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 06:37:37 | 898ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 22:09:28 | 596ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 22:51:26 | 2519ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-08 19:59:05 | 1002ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-16 20:56:40 | 25221ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 19:14:08 | 736ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 11:16:42 | 1159ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-24 05:09:35 | 1184ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 14:26:02 | 761ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 03:06:17 | 1601ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 18:05:44 shown | 485ms | 2 NS 2 A 1 MX | 🔓 Insecure |