| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.krystal.uk | 77.72.0.11 | ns1.krystal.uk | AS12488 Krystal Hosting Ltd |
| ns2.krystal.uk | 139.162.230.184 | ns2.krystal.uk | AS63949 Akamai Connected Cloud |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 77.72.2.88 | 14400s | octopus-lon.krystal.uk | AS12488 | Krystal Hosting Ltd | 77.72.0.0/21 | 🇬🇧 United Kingdom | London |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.krystal.uk | 185.53.56.44 185.53.56.46 |
mx1.strikemail.co.uk mx1.strikemail.co.uk |
AS12488 Krystal Hosting Ltd AS12488 Krystal Hosting Ltd |
| 20 | 3600s | mx2.krystal.uk | 185.53.56.45 185.53.56.47 |
mx2.strikemail.co.uk mx2.strikemail.co.uk |
AS12488 Krystal Hosting Ltd AS12488 Krystal Hosting Ltd |
| TXT Record |
|---|
| v=spf1 include:relay.k.io a mx ip4:77.72.2.88 ~all |
| Policy | Record (okrs.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:relay.k.io a mx ip4:77.72.2.88 ~all |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.okrs.dk | JVOILKI-HieNN7O7TxlPL_l96HFqzy-v0su7C7eb_ik |
| 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 | 2026070601 |
| Primary NS (MNAME) | ns1.krystal.uk |
| Responsible (RNAME) | admin@k-validator-octopus-lon.krystal.uk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-28 04:52:17 | 3396ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-08-27 06:59:58 | 10089ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-08-26 00:59:39 | 10224ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-07-08 19:26:45 | 1013ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-26 10:31:58 | 3128ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-22 18:48:16 | 1158ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-21 03:57:49 | 1312ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-21 01:23:01 | 913ms | 0 NS 0 A 0 MX | ❓ Unknown | View |
| 2026-06-17 13:17:49 | 2793ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |