harpercollins.dk is a .dk domain served by 6 nameservers (ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and 3 more). It was registered on 14 August 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.159.135.42 is hosted by Cloudflare, Inc. (AS13335) in United States. Mail is handled by mxa-00596a01.gslb.pphosted.com, mxb-00596a01.gslb.pphosted.com. The zone is not DNSSEC-signed, publishes a 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 162.159.135.42 | 3599s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 3600s | mxa-00596a01.gslb.pphosted.com | 205.220.182.48 | mx0b-00596a01.pphosted.com | AS22843 Proofpoint, Inc. |
| 5 | 3600s | mxb-00596a01.gslb.pphosted.com | 205.220.182.48 | mx0b-00596a01.pphosted.com | AS22843 Proofpoint, Inc. |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | intranat.harlequin.se |
| TXT Record |
|---|
| ca3-abf7a69e85fd47f58c148265ad25e91e |
| knowbe4-site-verification=0694ce74005828dc4bb8b7299bfb6f61 |
| MS=ms42789412 |
| v=spf1 include:carmamail.com include:spf.protection.outlook.com include:spf-00596a01.pphosted.com -all |
| Policy | Record (harpercollins.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:carmamail.com include:spf.protection.outlook.com include:spf-00596a01.pphosted.com -all |
| Policy | Record (_dmarc.harpercollins.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; fo=1; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com |
| www | 162.159.135.42 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 3/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.harpercollins.dk | harpercollins.dk.kinstavalidation.app |
| 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 | 2026081801 |
| Primary NS (MNAME) | ns1.markmonitor.com |
| Responsible (RNAME) | hostmaster@markmonitor.com |
| Refresh | 86400s |
| Retry | 3600s |
| Expire | 2592000s |
| Minimum (neg-cache TTL) | 172800s |
| Field | Value |
|---|---|
| Registrar | MarkMonitor Inc. |
| Registered | 2014-08-14 |
| Expires | 2027-08-31 (311d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 22:04:13 | 12070ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-09 10:13:28 | 2030ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-30 13:34:30 shown | 4457ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-24 14:14:20 | 5708ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-28 07:49:17 | 2049ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-19 23:26:49 | 16766ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-30 02:59:50 | 1566ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-21 00:27:46 | 1418ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 11:04:46 | 1626ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 11:00:13 | 5217ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 10:57:06 | 1757ms | 6 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 10:54:43 | 1804ms | 6 NS 1 A 2 MX | 🔓 Insecure |