bybiler.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 31.43.160.6 is hosted by Amazon.com, Inc. (AS16509) in The Netherlands. Mail is handled by mx.simply.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|
| ns1.simply.com | — | — | — |
| ns2.simply.com | — | — | — |
| ns3.simply.com | — | — | — |
| 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 |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (bybiler.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| Policy | Record (_dmarc.bybiler.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 104.21.50.26 172.67.155.183 2606:4700:3031::6815:321a 2606:4700:3036::ac43:9bb7 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026032504 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 12:49:55 | 980ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-23 16:51:25 | 1333ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-20 04:43:19 | 982ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-14 20:46:41 | 1619ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-25 11:21:10 | 738ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-09 12:00:38 | 1499ms | 2 NS 2 A 5 MX | ❓ Unknown |
| 2026-07-23 17:27:01 | 1780ms | 2 NS 2 A 5 MX | ❓ Unknown |
| 2026-07-22 14:35:14 | 1742ms | 2 NS 1 A 5 MX | ❓ Unknown |
| 2026-07-20 23:21:54 | 1359ms | 3 NS 1 A 5 MX | 🔓 Insecure |
| 2026-07-18 18:19:19 | 1286ms | 3 NS 1 A 5 MX | 🔒 Secure |
| 2026-07-06 15:31:28 | 1945ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 23:12:03 | 730ms | 3 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-22 16:49:13 | 920ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 18:19:38 | 3627ms | 3 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-16 18:16:00 shown | 2040ms | 3 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-16 18:07:41 | 471ms | 3 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-16 18:00:58 | 732ms | 3 NS 3 A 1 MX | 🔒 Secure |