optiit.dk is a .dk domain served by 2 nameservers (dora.ns.cloudflare.com, sam.ns.cloudflare.com). It was registered on 19 February 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.246 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by optiit-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.82.246 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.166.53 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:52f6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:a635 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.82.246,172.67.166.53 ech=AEX+DQBBMQAgACDg5z4GD0MbvFW86WWSKC19o5Dl0t/bAkdhucbdbC+CYwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:52f6,2606:4700:3036::ac43:a635 |
| TXT Record |
|---|
| MS=ms49998114 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (optiit.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.optiit.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:62f8844389064c2da074c272d209df04@dmarc-reports.cloudflare.net,mailto:dmarc@optiit.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:certificates@bondit.dk |
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | ssl.com |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| www | 104.21.82.246 172.67.166.53 2606:4700:3030::6815:52f6 2606:4700:3036::ac43:a635 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-optiit-dk._domainkey.bonditdk.n-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-optiit-dk._domainkey.bonditdk.n-v1.dkim.mail.microsoft | 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: 1/10 · 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 | 2416747036 |
| Primary NS (MNAME) | dora.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | dns.services ApS |
| Registered | 2023-02-19 |
| Expires | 2027-02-18 (118d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 07:10:16 | 1262ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-06 22:10:41 shown | 3476ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 19:33:18 | 1221ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-08 05:12:26 | 1108ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 00:02:26 | 1796ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-25 12:54:24 | 1275ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 23:38:55 | 897ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 16:58:17 | 1161ms | 2 NS 2 A 1 MX | 🔓 Insecure |