sydenham.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 January 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed and validates, has no 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.
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101201 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2005-01-04 |
| Expires | 2027-01-31 (102d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 07:54:53 shown | 1082ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-30 21:22:58 | 728ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-12 23:08:13 | 1385ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-26 20:04:26 | 999ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-12 08:07:19 | 3551ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-19 03:15:12 | 1439ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-15 10:15:43 | 1371ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-18 08:11:26 | 922ms | 2 NS 0 A 7 MX | 🔒 Secure |