byensmusikskole.dk is a .dk domain served by 2 nameservers (dana.ns.cloudflare.com, duke.ns.cloudflare.com). It was registered on 14 July 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.63.95.78 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 87.63.95.78 | 300s | 87-63-95-78-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.62.0.0/15 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx.simply.com | 94.231.103.108 94.231.106.20 |
mx.simply.com mx.simply.com |
AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.63.95.78 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| facebook-domain-verification=v5kt4tu82ahn4fk57hc281ja8g7dkj |
| google-site-verification=nBDWgolH4EP0Pp6KpKSeOJaZuea5YR9BKLuNKd9WZHg |
| google-site-verification=xbAdsFrrVPa6xHPpOEOHcox9zIZkuOyBwAxxfeE3UpQ |
| v=spf1 include:spf.simply.com include:flat.dedicated.mysmtp.com -all |
| Policy | Record (byensmusikskole.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com include:flat.dedicated.mysmtp.com -all |
| Policy | Record (_dmarc.byensmusikskole.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 87.63.95.78 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u22790233.wl234.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u22790233.wl234.sendgrid.net | 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: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| 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 | 2417986949 |
| Primary NS (MNAME) | dana.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 | 2021-07-14 |
| Expires | 2027-07-31 (282d) |
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 |
|---|---|
| musicgym.dk | Simply.com A/S |
| musiklærerne.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 16:43:22 shown | 2033ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-19 15:24:12 | 1606ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-17 12:39:26 | 422ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-16 12:36:18 | 751ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-14 06:29:54 | 362ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-12 21:54:15 | 1228ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-10 15:48:18 | 3738ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 13:08:19 | 1582ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-07 10:50:23 | 378ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-06 09:56:45 | 407ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 08:55:18 | 1523ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 08:52:46 | 715ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 08:50:09 | 797ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 08:45:20 | 594ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 15:29:48 | 1368ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 14:45:45 | 656ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-23 14:20:25 | 621ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-21 09:47:22 | 975ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-18 09:38:27 | 9508ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-12 16:09:11 | 755ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-05 22:08:01 | 1045ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-30 20:43:02 | 1075ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-02 09:48:53 | 868ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 21:14:40 | 1348ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 16:41:55 | 654ms | 4 NS 1 A 1 MX | 🔒 Secure |