dsr.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 10 October 1994 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 4.231.35.205 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 4.231.35.205 | 3600s | — | AS8075 | Microsoft Corporation | 4.224.0.0/11 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=KuSmrjYtGtJrcjN-mVAeT7L7LPYiZruQFBzyyf2qeSo |
| traction-guest=15637004-4788-41e3-bc94-62d8bc74561a |
| v=spf1 mx a ip4:20.54.238.131 ip4:93.191.155.240 ip4:34.110.180.34 ip4:34.127.83.42 ip4:20.16.248.199 ip4:194.28.252.26/32 ip4:91.227.208.0/24 ip4:185.64.72.0/24 ip4:194.71.205.0/24 ip4:91.213.250.10 ip4:77.233.249.32/28 ip4:5.56.151.135 ip4:5.56.151.139 include:mail.zendesk.com include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.topdesk.net include:spf.mandrillapp.com include:_spf.emply.com -all |
| Policy | Record (dsr.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a ip4:20.54.238.131 ip4:93.191.155.240 ip4:34.110.180.34 ip4:34.127.83.42 ip4:20.16.248.199 ip4:194.28.252.26/32 ip4:91.227.208.0/24 ip4:185.64.72.0/24 ip4:194.71.205.0/24 ip4:91.213.250.10 ip4:77.233.249.32/28 ip4:5.56.151.135 ip4:5.56.151.139 include:mail.zendesk.com include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.topdesk.net include:spf.mandrillapp.com include:_spf.emply.com -all |
| Policy | Record (_dmarc.dsr.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | dsr.dk (all on dsr.dk) → 4.231.35.205 (AS8075) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u7650013.wl014.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u7650013.wl014.sendgrid.net | RSA · ~1024 bit below 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: 8/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026090505 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 1994-10-10 |
| Expires | 2027-04-30 (189d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 00:34:06 | 2063ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-08 18:50:23 | 3930ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-03 17:33:39 | 456ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-20 06:11:31 | 1452ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-13 05:27:14 | 1223ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-08 05:06:43 shown | 1527ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-12 07:27:00 | 5735ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-17 21:39:44 | 1401ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-16 11:06:01 | 3069ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-13 15:17:43 | 1311ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-07 19:25:36 | 1288ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 07:00:55 | 982ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 04:50:32 | 2752ms | 2 NS 1 A 4 MX | 🔒 Secure |