tekknow.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 16 October 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 79.98.28.23 is hosted by UAB Interneto vizija (AS212531) in Lithuania. Mail is handled by smtp.spamfilter.io. 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 |
|---|---|---|---|---|---|---|---|
| 79.98.28.23 | 2160s | pelikanas.serveriai.lt | AS212531 | UAB Interneto vizija | 79.98.24.0/21 | 🇱🇹 Lithuania | Vilnius |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 2160s | smtp.spamfilter.io | 46.36.212.35 94.231.106.10 |
node5.spamfilter.io node1.spamfilter.io |
AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms45134470 |
| v=spf1 ip4:87.63.91.66/30 ip4:62.116.201.192/26 include:spf.spamfilter.io include:it-cloud.dk include:spf.protection.outlook.com -all |
| Policy | Record (tekknow.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:87.63.91.66/30 ip4:62.116.201.192/26 include:spf.spamfilter.io include:it-cloud.dk include:spf.protection.outlook.com -all |
| www | 79.98.28.23 (AS212531) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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: 3/10 · 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 | 2020051201 |
| Primary NS (MNAME) | ns.scannet2.dk |
| Responsible (RNAME) | hostmaster@scannet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1998-10-16 |
| Expires | 2026-12-31 (75d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-24 06:26:38 shown | 611ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 08:42:24 | 786ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 12:09:07 | 1133ms | 2 NS 1 A 1 MX | 🔒 Secure |