| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 212.37.155.51 | 300s | 212-37-155-51.norlyscustomer.net | AS39642 | Sinal A/S | 212.37.128.0/19 | 🇩🇰 Denmark | Bramming |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | infrasecure.dk → 212.37.155.51 |
| 🔶 Autoconfig | infrasecure.dk → 212.37.155.51 |
| TXT Record |
|---|
| protonmail-verification=658f82ca4329d90da930ec1c2852ecd0751e5aa0 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (infrasecure.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.infrasecure.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.infrasecure.dk | infrasecure.dk |
| TXT | infrasecure.dk | protonmail-verification=658f82ca4329d90da930ec1c2852ecd0751e5aa0 |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2411931532 |
| Primary NS (MNAME) | dora.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-12 08:35:06 | 1773ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-08-02 08:58:23 | 3425ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-07-19 08:39:36 | 2536ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-07-16 21:13:34 | 9525ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-26 03:26:29 | 961ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-22 03:29:59 | 587ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-17 22:18:41 | 933ms | 2 NS 1 A 2 MX | 🔒 Secure | View |