blackboard.dk is a .dk domain served by 5 nameservers (ns1pri.webhosting.dk, ns2.mywebtonet.com, ns2.webhosting.dk and 2 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.129.96 is hosted by Google Ireland Limited (AS43515) in The Netherlands. Mail is handled by webhotel12.webhosting.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 35.214.129.96 | 600s | 96.129.214.35.bc.googleusercontent.com | AS43515 | Google Ireland Limited | 35.214.128.0/17 | 🇳🇱 The Netherlands | Groningen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | webhotel12.webhosting.dk | 157.250.160.32 | webhotel12.webhosting.dk | AS3342 Cibicom A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | php71serv1.webhosting.dk → 157.250.163.29 |
| 🔶 Autoconfig | php71serv1.webhosting.dk → 157.250.163.29 |
| www | 35.214.129.96 (AS43515) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.blackboard.dk | php71serv1.webhosting.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.webhotel12.webhosting.dk | DANE-EE · SPKI · SHA-256 | FA4EFC305AA17A4FEEE8B29B2DAA8847… |
| SMTP _25._tcp.webhotel12.webhosting.dk | DANE-TA · SPKI · SHA-256 | FA4EFC305AA17A4FEEE8B29B2DAA8847… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 3010151084 |
| Primary NS (MNAME) | ns1pri.webhosting.dk |
| Responsible (RNAME) | hostmaster@webhosting.dk |
| Refresh | 21600s |
| Retry | 3600s |
| Expire | 14515200s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-19 11:24:16 shown | 771ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 15:56:45 | 9606ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 16:23:21 | 769ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-30 18:11:10 | 1083ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 16:09:20 | 1465ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:45:33 | 608ms | 5 NS 1 A 1 MX | 🔒 Secure |