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) in United States. 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 our latest 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 | 300s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| 162.159.153.241 | 300s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | 300s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| 🔶 Autoconfig | autoconfig-mf.onlinemail.io → 185.21.40.62 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:7::a29f:9817 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/43 | 🇺🇸 United States | San Francisco |
| 2606:4700:7::a29f:99f1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/43 | 🇺🇸 United States | San Francisco |
| 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
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.jdb-elteknik.dk | 20iQkJDNsPoEGDjohowSQS6OoXn4-GDMA3E20LCxWzc |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417195418 |
| 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 (285d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 00:15:07 shown | 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 | 750ms | 2 NS 2 A 2 MX | 🔒 Secure |