| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 64.251.15.208 | 43200s | 208-15-251-64.serverpronto.com | AS15083 | Infolink Global Corporation | 64.251.0.0/19 | 🇺🇸 United States | Miami |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 64.251.15.208 |
| 🔶 Autoconfig | 64.251.15.208 |
| TXT Record |
|---|
| protonmail-verification=ded365cf24771236ebf4ea9ad268dc690c094ab1 |
| v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (paal.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch mx ~all |
| 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 | 2026082601 |
| 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 | |
|---|---|---|---|---|
| 2026-08-27 11:29:35 | 1201ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-08-27 07:22:02 | 1059ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-08-20 14:43:36 | 6573ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-08-03 06:24:27 | 1048ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-07-27 11:31:52 | 1338ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-25 22:29:19 | 945ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-23 09:24:27 | 3154ms | 2 NS 1 A 2 MX | 🔒 Secure | View |
| 2026-06-22 22:03:02 | 1192ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-17 11:42:04 | 3074ms | 2 NS 1 A 2 MX | 🔒 Secure | View |