retroblog.dk is a .dk domain served by 4 nameservers (ns1.quickdns.dk, ns2.quickdns.dk, ns3.quickdns.dk and 1 more). It was registered on 31 July 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 90.185.28.145 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by ungoliant.spliph.net. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 90.185.28.145 | 300s | polyphemus.spliph.net | AS203953 | Hiper A/S | 90.184.0.0/15 | 🇩🇰 Denmark | Esbjerg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | ungoliant.spliph.net | 90.185.28.145 | polyphemus.spliph.net | AS203953 Hiper A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | polyphemus.spliph.net → 90.185.28.145 |
| 🔶 Autoconfig | polyphemus.spliph.net → 90.185.28.145 |
| TXT Record |
|---|
| v=spf1 mx a ip4:90.185.28.145/32 -all |
| Policy | Record (retroblog.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a ip4:90.185.28.145/32 -all |
| Policy | Record (_dmarc.retroblog.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:angus_pmg@spliph.net; ruf=mailto:angus@spliph.net; fo=0; adkim=s; aspf=s; ri=21600 |
| Check | Result |
|---|---|
| Status | 🧪 Testing |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | testing |
| Policy ID | 2026082301 |
| max_age | 86400s |
| Policy MX | ungoliant.spliph.net |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:angus_pmg@spliph.net |
| www CNAME | polyphemus.spliph.net (all on spliph.net) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 2/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.retroblog.dk | polyphemus.spliph.net |
| 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 | 2026082503 |
| Primary NS (MNAME) | ns1.quickdns.dk |
| Responsible (RNAME) | hostmaster@quickdns.dk |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 2415600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2017-07-31 |
| Expires | 2027-07-31 (287d) |
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 |
|---|---|
| akfalken.dk | DANDOMAIN A/S |
| listserver.dk | Punktum dk A/S (direct) |
| lyons.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 07:46:11 | 585ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 22:46:06 shown | 1449ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-24 00:34:22 | 8994ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-10 13:51:30 | 1116ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-27 11:34:09 | 1380ms | 4 NS 1 A 1 MX | ❓ Unknown |
| 2026-07-26 10:42:33 | 1360ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-22 05:24:25 | 1148ms | 4 NS 1 A 1 MX | ❓ Unknown |
| 2026-07-20 00:47:53 | 3404ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-13 19:37:01 | 1438ms | 4 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-19 14:09:45 | 3296ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 00:27:32 | 3493ms | 4 NS 1 A 1 MX | 🔓 Insecure |