sjelbo.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 26 September 2026 (WHOIS) and first appeared in the .dk zone on 27 September 2026. Its website address 216.24.57.1 is hosted by Render (AS397273) in United States. Mail is handled by .. The zone is DNSSEC-signed and validates, has no 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 216.24.57.1 | 3600s | ip-216-24-57-1.ingress.render.com | AS397273 | Render | 216.24.57.0/24 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| www CNAME | sjelbo.onrender.com (all on onrender.com) |
| www vs bare domain | Same network |
| 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 | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100301 |
| 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 | 2026-09-26 |
| Expires | 2027-09-25 (334d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 11:18:17 | 657ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 09:51:57 shown | 604ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 08:58:50 | 510ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 08:41:57 | 580ms | 2 NS 1 A 1 MX | 🔓 Insecure |