kronlein.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 March 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 31.220.92.139 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by smtp.kronlein.dk, mail1.kronlein.dk and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 31.220.92.139 | 43200s | vmi1501706.contaboserver.net | AS51167 | Contabo GmbH | 31.220.80.0/20 | 🇫🇷 France | Lauterbourg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | smtp.kronlein.dk | 62.164.213.156 | vmi2345123.contaboserver.net | AS51167 Contabo GmbH |
| 20 | 3600s | mail1.kronlein.dk | 144.91.107.31 | vmi2946224.contaboserver.net | AS51167 Contabo GmbH |
| 40 | 3600s | mxa.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| 50 | 3600s | mxb.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| TXT Record |
|---|
| v=spf1 +mx +a ~all |
| Policy | Record (kronlein.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +mx +a ~all |
| Policy | Record (_dmarc.kronlein.dk) |
|---|---|
| p=quarantine | v=DMARC1;p=quarantine;rua=mailto:admin@kronlein.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | letsencrypt.org |
| www | 31.220.92.139 (AS51167) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026051101 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1998-03-20 |
| Expires | 2027-03-31 (165d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 10:43:35 | 865ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 10:36:11 | 810ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-27 22:02:56 | 802ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-03 20:06:55 | 1111ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-29 04:29:58 | 1229ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-13 15:43:18 | 5203ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-07 12:20:55 | 6999ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-03 07:34:55 | 886ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-27 12:49:46 | 1367ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 20:01:25 | 992ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 10:50:16 shown | 3036ms | 2 NS 1 A 4 MX | 🔒 Secure |