cengage-group.dk is a .dk domain served by 3 nameservers (kyindxmmexternal.cengage.net, ns1.cengage.net, ns2.cengage.net). It was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, has no 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| kyindxmmexternal.cengage.net | — | — | — |
| ns1.cengage.net | — | — | — |
| ns2.cengage.net | — | — | — |
| TXT Record |
|---|
| "v=spf1 -all" |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2022092802 |
| Primary NS (MNAME) | kyindxmmexternal.cengage.net |
| Responsible (RNAME) | hostmaster@cengage-group.dk |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 1036800s |
| Minimum (neg-cache TTL) | 7200s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-23 20:42:56 | 3530ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-24 18:41:03 | 3525ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-16 20:15:00 | 6205ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-16 20:10:16 shown | 967ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-16 20:04:08 | 3373ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-16 20:00:58 | 1231ms | 3 NS 0 A 0 MX | 🔓 Insecure |