| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 83.137.144.32 | 3600s | isp.defeest.nl | AS31477 | Duocast B.V. | 83.137.144.0/21 | 🇳🇱 The Netherlands | Blauwestad |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | smtp-in.initfour.nl | 2a01:1b0:7999:408:144::20 83.137.144.20 |
— smtp-in.initfour.nl |
AS31477 Duocast B.V. AS31477 Duocast B.V. |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | autoconfig.initfour.nl → 83.137.144.35 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:1b0:7999:408:144::32 | 3600s | — | AS31477 | Duocast B.V. | 2a01:1b0:0:0:0:0:0:0/33 | 🇳🇱 The Netherlands | — |
| TXT Record |
|---|
| v=DMARC1; p=none |
| v=spf1 mx a include:_spf.initfour.nl -all |
| Policy | Record (detfest.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a include:_spf.initfour.nl -all |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.smtp-in.initfour.nl | DANE-EE · SPKI · SHA-256 | 43D24268794DE410F5E70BA7B90FA610… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026083002 |
| Primary NS (MNAME) | ns1.initfour.nl |
| Responsible (RNAME) | info@initfour.nl |
| Refresh | 7200s |
| Retry | 540s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC | |
|---|---|---|---|---|
| 2026-08-31 05:01:04 | 2220ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-25 07:44:17 | 21828ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-21 03:15:52 | 9117ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-16 18:02:03 | 3739ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-12 15:33:57 | 4277ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-09 10:25:52 | 3163ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-08-02 16:55:51 | 18342ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-26 10:27:38 | 5750ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-22 02:59:30 | 5081ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-17 07:03:05 | 18070ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-11 20:02:21 | 1214ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-07 01:53:59 | 5693ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-07-03 07:27:46 | 2490ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-28 07:27:40 | 1610ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-27 10:13:49 | 3104ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 02:26:14 | 684ms | 2 NS 1 A 1 MX | 🔒 Secure | View |
| 2026-06-17 02:20:29 | 700ms | 2 NS 1 A 1 MX | 🔒 Secure | View |