optimiz.dk is a .dk domain served by 5 nameservers (ns1.powerhosting.dk, ns2.powerhosting.dk, ns3.powerhosting.dk and 2 more). It was registered on 21 March 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.31.79.5 is hosted by DLX A/S (AS47527) in Denmark. Mail is handled by mailscanner.powerhosting.dk, backup-mx.powerhosting.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 185.31.79.5 | 3600s | v4-elastic-ingress.balancer01.hyperscalemega.cloud | AS47527 | DLX A/S | 185.31.76.0/22 | 🇩🇰 Denmark | Herning |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 185.31.79.5 |
| 🔶 Autoconfig | autoconfig.powerhosting.dk → 188.116.39.132 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a00:b920:3:1337::5 | 3600s | — | AS47527 | DLX A/S | 2a00:b920:0:0:0:0:0:0/29 | 🇩🇰 Denmark | Herning |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 1 | 443 | autodiscover.powerhosting.dk |
| _imap._tcp | 20 | 10 | 143 | mail1.powerhosting.dk |
| _imaps._tcp | 10 | 10 | 993 | mail1.powerhosting.dk |
| TXT Record |
|---|
| v=spf1 include:_spf.powerhosting.dk -all |
| Policy | Record (optimiz.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.powerhosting.dk -all |
| Policy | Record (_dmarc.optimiz.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@powerhosting.dk; ruf=mailto:dmarc@powerhosting.dk; adkim=r; aspf=r |
| www CNAME | elastic.lb.powerhosting.dk (all on powerhosting.dk) |
| www vs bare domain | Same network optimiz.dk: 185.31.79.5 2a00:b920:3:1337::5 (AS47527) www.optimiz.dk: 185.31.79.5 2a00:b920:3:1337::5 (AS47527) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | ph._domainkey.powerhosting.dk | RSA · ~1024 bit below 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: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.backup-mx.powerhosting.dk | DANE-EE · SPKI · SHA-256 | 3C02E6711E7E08A1889E67D27C35D230… |
| SMTP _25._tcp.mailscanner.powerhosting.dk | DANE-EE · SPKI · SHA-256 | 3C02E6711E7E08A1889E67D27C35D230… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081301 |
| Primary NS (MNAME) | ns1.powerhosting.dk |
| Responsible (RNAME) | zonemaster@powerhosting.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-03-21 |
| Expires | 2027-03-31 (163d) |
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 |
|---|---|---|---|
| 2026-10-16 03:23:19 | 583ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-08 16:53:20 | 2630ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 10:53:46 | 3345ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-25 09:55:41 | 1116ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 12:59:51 | 2192ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-17 11:20:06 | 2628ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-15 22:36:39 | 4672ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-04 17:11:56 | 2240ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-02 07:48:43 | 1007ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-28 02:00:26 | 1067ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-25 22:41:12 | 985ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-20 18:08:46 | 11921ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-13 15:27:38 shown | 2944ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-08 16:23:11 | 2889ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-23 12:13:11 | 11400ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-16 16:41:57 | 10664ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-11 23:39:09 | 4483ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-03 12:17:59 | 7762ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-26 18:13:30 | 3101ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 17:15:18 | 1008ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 13:39:55 | 1849ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 22:32:51 | 905ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 06:23:19 | 5332ms | 5 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 22:12:11 | 28414ms | 5 NS 1 A 2 MX | 🔒 Secure |