corendon.dk is a .dk domain served by 4 nameservers (ns1.sectigoweb.com, ns2.sectigoweb.com, ns3.sectigoweb.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 108.141.201.16 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by corendon-dk.mail.protection.outlook.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 |
|---|---|---|---|---|---|---|---|
| 108.141.201.16 | 900s | — | AS8075 | Microsoft Corporation | 108.140.0.0/14 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | exc-pri-01.corendon.nl |
| _sip._tcp | 0 | 0 | 443 | sip.corendon.nl |
| _sip._tcp | 10 | 0 | 443 | sipfo.corendon.nl |
| _sipfederationtls._tcp | 0 | 0 | 5061 | sip.corendon.nl |
| _xmpp-server._tcp | 0 | 0 | 5269 | sip.corendon.nl |
| TXT Record |
|---|
| 4hVZrXisKOJrO4pTEFhRKDo3hupgxrS9 |
| facebook-domain-verification=x67jtj768i1kttx1a7cddrf3vx89zw |
| google-site-verification=0eRCiJDMVpCqBA2VIItoCSLI-ASNXYpxKjixoXzYovM |
| google-site-verification=a1dg_PGJihNob0D7HmFCV2Dkv-9wIUVcyLgSHx2Sp-E |
| MS=ms92502986 |
| pinterest-site-verification=7af457b06845ab828552b1cc0b920198 |
| v=spf1 include:spf.protection.outlook.com include:em4650.corendon.dk include:trustpilotservice.com include:_spf.trustit.eu include:_spf.salesforce.com include:_spf.corendon.nl -all |
| Policy | Record (corendon.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:em4650.corendon.dk include:trustpilotservice.com include:_spf.trustit.eu include:_spf.salesforce.com include:_spf.corendon.nl -all |
| Policy | Record (_dmarc.corendon.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:dmarc_monitor@corendon.nl; ruf=mailto:dmarc_forensic@corendon.nl; fo=1:s |
| www CNAME | apgw-iss-prod-web-external.corendon.nl (all on corendon.nl) → 51.138.55.51 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit | |
| s1 | s1.domainkey.u369832.wl083.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u369832.wl083.sendgrid.net | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-corendon-dk._domainkey.corendonholding.onmicrosoft.com | 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: 7/10 · 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 | 1658494566 |
| Primary NS (MNAME) | ns1.sectigoweb.com |
| Responsible (RNAME) | admin@sectigo.com |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 19:29:20 | 639ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 19:24:33 | 2642ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 14:56:58 | 1673ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 20:13:34 shown | 7135ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-26 14:55:03 | 65535ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-19 07:47:16 | 9150ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 22:25:47 | 1810ms | 4 NS 1 A 1 MX | 🔓 Insecure |