sejlfirst.dk is a .dk domain served by 3 nameservers (ns1.openprovider.nl, ns2.openprovider.be, ns3.openprovider.eu). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.204.150.5 is hosted by Google LLC (AS396982) in The Netherlands. Mail is handled by mail.webador.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 35.204.150.5 | 3600s | 5.150.204.35.bc.googleusercontent.com | AS396982 | Google LLC | 35.204.0.0/15 | 🇳🇱 The Netherlands | Groningen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | mail.webador.com | 34.147.104.167 | 167.104.147.34.bc.googleusercontent.com | AS396982 Google LLC |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | block.mail.webador.com → 35.204.229.147 |
| 🔶 Autoconfig | autoconfig.mail.webador.com → 34.147.104.167 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | autoconfig.mail.webador.com |
| TXT Record |
|---|
| v=spf1 include:_spf.webador.com ~all |
| Policy | Record (sejlfirst.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.webador.com ~all |
| Policy | Record (_dmarc.sejlfirst.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| www | 93.191.158.87 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sejlfirst.dk | website-rendering.webador.com |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.webador.com | DANE-EE · SPKI · SHA-256 | 8AF4A89D53899CFDC21DDDB5A9927350… |
| 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 | 2026070301 |
| Primary NS (MNAME) | ns1.openprovider.nl |
| Responsible (RNAME) | dns@openprovider.eu |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 19:44:36 | 392ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-25 17:49:16 | 531ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-19 01:23:40 | 4821ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-11 23:54:21 | 1821ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-15 07:19:05 shown | 7791ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 19:19:29 | 4000ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-26 06:04:56 | 2646ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 00:42:29 | 1378ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 11:41:05 | 1531ms | 3 NS 1 A 1 MX | ⚠️ Bogus |