tkachenko.dk is a .dk domain served by 2 nameservers (jerry.ns.cloudflare.com, ligia.ns.cloudflare.com). It was registered on 28 January 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.18.13 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mailserver.purelymail.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.18.13 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.179.41 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 50 | 300s | mailserver.purelymail.com | 18.204.123.63 | ec2-18-204-123-63.compute-1.amazonaws.com | AS14618 Amazon.com, Inc. |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:b329 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:120d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.18.13,172.67.179.41 ech=AEX+DQBB3gAgACCAJYqs+g7Obpw0YAaBuh9lX49qEHwZi+EhuLO8FtSTRgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b329,2606:4700:3036::6815:120d |
| TXT Record |
|---|
| purelymail_ownership_proof=af60b92d88021321c18a55eeaf850530b26f7fc0b35f87ebedcdbcb7fdd311539a561f1cd821b526c5f670cb365dd81705e01e85997fca64011e9158c5a19855 |
| v=spf1 include:_spf.purelymail.com ~all |
| Policy | Record (tkachenko.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.purelymail.com ~all |
| Policy | Record (_dmarc.tkachenko.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; ruf=mailto:dmarc@purelymail.com |
| www | 104.21.18.13 172.67.179.41 2606:4700:3031::ac43:b329 2606:4700:3036::6815:120d (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network tkachenko.dk: 104.21.18.13 172.67.179.41 2606:4700:3031::ac43:b329 2606:4700:3036::6815:120d (AS13335) www.tkachenko.dk: 104.21.18.13 172.67.179.41 2606:4700:3031::ac43:b329 2606:4700:3036::6815:120d (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · policy: ~all
No problems found| 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 | 2417935458 |
| Primary NS (MNAME) | jerry.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2025-01-28 |
| Expires | 2027-01-27 (98d) |
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).
| Domain | Registrar |
|---|---|
| diahub.dk | Simply.com A/S |
| jyskhub.dk | Simply.com A/S |
| scandiweb.dk | Simply.com A/S |
| sodtsmart.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 04:23:20 shown | 3476ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-18 11:49:12 | 3028ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-27 11:04:07 | 1056ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-17 19:02:57 | 17536ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-04 21:42:24 | 935ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-17 20:06:17 | 728ms | 2 NS 0 A 1 MX | 🔓 Insecure |