| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.221.196.222 | 43200s | — | AS51468 | One.com A/S | 91.221.196.0/23 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| protonmail-verification=c0b2d89b5d2aad093573cf83caebbccc0caa614d |
| v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (alkilde.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (_dmarc.alkilde.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| 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 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081101 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-26 21:51:16 | 738ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-08-11 21:06:11 | 4952ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-07-22 10:36:17 | 6926ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-07-17 16:27:53 | 1055ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-07-13 23:33:14 | 917ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-20 04:57:50 | 713ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-16 12:47:54 | 789ms | 2 NS 1 A 2 MX | 🔒 Secure | View |