| 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 ip4:77.72.2.88 ip4:77.72.0.98 include:relay.k.io a mx ip4:77.72.6.12 ~all |
| Policy | Record (bordercollie.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:77.72.2.88 ip4:77.72.0.98 include:relay.k.io a mx ip4:77.72.6.12 ~all |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.bordercollie.dk | MFUNV2WSRp7P6GUTBVvm4nRgWbYC-MlBmmgR3_TyQkQ |
| 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 | 2026082601 |
| 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 | |
|---|---|---|---|---|
| 2026-08-27 00:29:32 | 1641ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-27 06:53:03 | 1591ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-22 10:40:37 | 1509ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-16 16:07:36 | 2723ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-16 16:05:10 | 1004ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-16 16:02:58 | 5504ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |
| 2026-06-16 16:00:13 | 951ms | 2 NS 1 A 2 MX | 🔓 Insecure | View |