backswim.dk is a .dk domain served by 2 nameservers (ns1.azehosting.net, ns2.azehosting.net). It was registered on 12 September 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 49.12.83.125 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by backswim.dk. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 49.12.83.125 | 360s | re03.azehosting.net | AS24940 | Hetzner Online GmbH | 49.12.0.0/15 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 360s | backswim.dk | 2a01:4f8:2200:4382::2 49.12.83.125 |
re03.azehosting.net re03.azehosting.net |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:4f8:2200:4382::2 | 14400s | re03.azehosting.net | AS24940 | Hetzner Online GmbH | 2a01:4f8:0:0:0:0:0:0/31 | 🇩🇪 Germany | Falkenstein |
| TXT Record |
|---|
| v=spf1 ip4:49.12.83.125 include:spf.azehosting.net include:spf.resellerhotel.dk +a +mx +ip4:185.221.37.134 +ip4:195.201.243.87 +ip4:94.130.52.47 +ip4:138.201.239.158 +ip4:88.99.200.26 +include:relay.mailchannels.net +include:relay.mailchannels.net ~all |
| Policy | Record (backswim.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:49.12.83.125 include:spf.azehosting.net include:spf.resellerhotel.dk +a +mx +ip4:185.221.37.134 +ip4:195.201.243.87 +ip4:94.130.52.47 +ip4:138.201.239.158 +ip4:88.99.200.26 +include:relay.mailchannels.net +include:relay.mailchannels.net ~all |
| www CNAME | backswim.dk (all on backswim.dk) |
| www vs bare domain | Same network backswim.dk: 195.201.240.150 2a01:4f8:231:c7::2 (AS24940) www.backswim.dk: 195.201.240.150 2a01:4f8:231:c7::2 (AS24940) |
| Wildcard | No |
| Denial of existence | NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 8/10 · policy: ~all
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.backswim.dk | hJIjr4o3DbniGDbopNOwr1GJXFXr9skr2TRVOH-MnGE |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026092402 |
| Primary NS (MNAME) | ns1.azehosting.net |
| Responsible (RNAME) | hostmaster@azehosting.net |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Key-Systems GmbH |
| Registered | 2008-09-12 |
| Expires | 2030-09-30 (1443d) |
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 |
|---|---|---|---|
| 2026-09-30 22:56:27 | 881ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 22:44:32 | 807ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 21:36:50 shown | 757ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-10 09:18:01 | 1262ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-03 08:47:18 | 9493ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 15:27:43 | 4921ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-09 02:41:15 | 1791ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 15:08:46 | 1479ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 22:30:47 | 2520ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:00:19 | 760ms | 2 NS 1 A 1 MX | 🔒 Secure |