ef-s.dk is a .dk domain served by 3 nameservers (ns3.firstfind.nl, ns4.firstfind.nl, ns5.firstfind.net). It was registered on 17 August 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.37.70.78 is hosted by Your Hosting B.V. (AS48635) in The Netherlands. Mail is handled by primary.yourfilter.nl, fallback.yourfilter.nl. The zone is not DNSSEC-signed, publishes a 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns3.firstfind.nl | — | — | — |
| ns4.firstfind.nl | — | — | — |
| ns5.firstfind.net | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.37.70.78 | — | server117.yourhosting.nl | AS48635 | Your Hosting B.V. | 185.37.68.0/22 | 🇳🇱 The Netherlands | — |
| TXT Record |
|---|
| v=spf1 a mx include:_spf.yourfilter.nl -all |
| Policy | Record (ef-s.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:_spf.yourfilter.nl -all |
| Policy | Record (_dmarc.ef-s.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | ef-s.dk (all on ef-s.dk) |
| Wildcard | Yes: any name under the zone resolves |
| 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: 7/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2021081601 |
| Primary NS (MNAME) | ns3.firstfind.nl |
| Responsible (RNAME) | hostmaster@firstfind@nl |
| Refresh | 16384s |
| Retry | 2048s |
| Expire | 1048576s |
| Minimum (neg-cache TTL) | 14400s |
| Field | Value |
|---|---|
| Registrar | Realtime Register B.V. |
| Registered | 2021-08-17 |
| Expires | 2027-08-31 (318d) |
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 |
|---|---|---|---|
| 2026-07-02 01:18:41 | 3681ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 06:27:37 | 18473ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 06:22:14 | 2937ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 06:02:46 shown | 1108ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 06:00:09 | 7058ms | 3 NS 1 A 2 MX | 🔓 Insecure |