csec.dk is a .dk domain served by 2 nameservers (jose.ns.cloudflare.com, zelda.ns.cloudflare.com). It was registered on 17 September 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 83.88.194.99 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.csec.dk. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 83.88.194.99 | 300s | 83-88-194-99-cable.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 83.88.192.0/18 | 🇩🇰 Denmark | Valby |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | mail.csec.dk | 148.251.244.167 | cp06.nordicway.dk | AS24940 Hetzner Online GmbH |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | webmail.csec.dk |
| TXT Record |
|---|
| v=spf1 +a +mx +ip4:157.90.179.89 +ip4:148.251.244.167 +ip4:83.88.194.99 include:relay.mailchannels.net ~all |
| Policy | Record (csec.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +ip4:157.90.179.89 +ip4:148.251.244.167 +ip4:83.88.194.99 include:relay.mailchannels.net ~all |
| Policy | Record (_dmarc.csec.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400 |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~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: 3/10 · 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 | 2416276522 |
| Primary NS (MNAME) | jose.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | nordicway ApS |
| Registered | 2001-09-17 |
| Expires | 2027-09-30 (347d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 09:43:14 shown | 888ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 18:03:18 | 4831ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 17:58:32 | 6997ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 14:16:36 | 3053ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 19:22:21 | 4599ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-22 16:45:16 | 929ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 04:20:43 | 753ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 23:06:27 | 427ms | 2 NS 1 A 1 MX | 🔓 Insecure |