jdb-elteknik.dk is a .dk domain served by 2 nameservers (johnny.ns.cloudflare.com, maxine.ns.cloudflare.com). It was registered on 23 July 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.159.152.23 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 162.159.152.23 | — | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | — | — |
| 162.159.153.241 | — | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | — | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:7::a29f:9817 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| 2606:4700:7::a29f:99f1 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | — | — |
| TXT Record |
|---|
| MS=ms46137579 |
| v=spf1 include:spf.onlinemail.io include:spf.mtasv.net ?all |
| Policy | Record (jdb-elteknik.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:spf.onlinemail.io include:spf.mtasv.net ?all |
| www | 104.21.31.235 172.67.180.192 2606:4700:3031::6815:1feb 2606:4700:3036::ac43:b4c0 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network jdb-elteknik.dk: 162.159.152.23 162.159.153.241 2606:4700:7::a29f:9817 2606:4700:7::a29f:99f1 (AS13335) www.jdb-elteknik.dk: 104.21.31.235 172.67.180.192 2606:4700:3031::6815:1feb 2606:4700:3036::ac43:b4c0 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 4/10 · policy: ?all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2406997780 |
| Primary NS (MNAME) | johnny.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2010-07-23 |
| Expires | 2027-07-31 (281d) |
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 |
|---|---|
| jdb-gruppen.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 03:27:45 | 1836ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-12 00:15:07 | 1518ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-06 06:49:31 | 513ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-10-01 06:04:08 | 640ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-26 06:09:50 | 783ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-04 02:59:26 | 1227ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-27 06:59:24 | 1460ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-13 15:17:07 | 1078ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-09 05:53:29 | 10017ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-07-16 18:43:33 | 10034ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-07-02 23:57:33 | 2789ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-23 13:17:16 | 908ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-17 12:13:37 shown | 750ms | 2 NS 2 A 2 MX | 🔒 Secure |