duf-rejser.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 194.103.128.37 is hosted by Vitec Software Group AB (AS197332) in Sweden. Mail is handled by mx.spamfilter.io. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.simply.com | — | — | — |
| ns2.simply.com | — | — | — |
| ns3.simply.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 194.103.128.37 | — | 37-128.vitec.se | AS197332 | Vitec Software Group AB | 194.103.128.0/23 | 🇸🇪 Sweden | — |
| TXT Record |
|---|
| facebook-domain-verification=8fx4xd7g6wzk9o2uy5881kxjfg9w0g |
| google-site-verification=9pnG188ZM8z30ghPWCiZVmjEBER59QTxss-cP-XKuPo |
| tiktok-developers-site-verification=fPg8Tx5DbprPGHVpPlTddW5Q0ResZagC |
| v=spf1 include:spf.curanet.dk include:emsd1.com include:servers.mcsv.net include:spf.mandrillapp.com include:mailgun.org include:mail.zendesk.com ~all |
| Policy | Record (duf-rejser.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.curanet.dk include:emsd1.com include:servers.mcsv.net include:spf.mandrillapp.com include:mailgun.org include:mail.zendesk.com ~all |
| Policy | Record (_dmarc.duf-rejser.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1;p=none; |
| www CNAME | asp.nordicinvasion.travelize.se (all on travelize.se) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| k1 | dkim.mcsv.net | RSA · ~1024 bit below 2048 bit |
| s1 | — | 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: 12/10 · policy: ~all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.spamfilter.io | DANE-EE · SPKI · SHA-256 | 9A25F05F2E322DABDCC9B7A06AB47A2D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026041405 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 12:29:59 | 518ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 06:31:36 | 604ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 02:14:10 | 640ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 01:11:50 | 548ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 16:26:30 | 694ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 16:01:11 | 756ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-01 20:35:00 | 9069ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 10:27:28 | 711ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 04:55:10 shown | 750ms | 3 NS 1 A 1 MX | 🔒 Secure |