tycho.dk is a .dk domain served by 2 nameservers (johnny.ns.cloudflare.com, melissa.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.159.134.42 is hosted by Cloudflare, Inc. (AS13335) in United States. Mail is handled by tycho-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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 162.159.134.42 | 300s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| 162.159.135.42 | 300s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:7::a29f:862a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | 🇸🇦 Saudi Arabia | Riyadh |
| 2606:4700:7::a29f:872a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:0:0:0:0:0:0/41 | 🇸🇦 Saudi Arabia | Riyadh |
| TXT Record |
|---|
| MS=ms85642547 |
| v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net -all |
| Policy | Record (tycho.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net -all |
| Policy | Record (_dmarc.tycho.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:s4np1m3y@ag.dmarcian-eu.com; |
| www CNAME | planetarium.hosting.kinsta.cloud (all on kinsta.cloud) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| k1 | dkim.mcsv.net | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-tycho-dk._domainkey.tychobraheplanetarium.onmicrosoft.com | 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: 2/10 · 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 | 2415746613 |
| Primary NS (MNAME) | johnny.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 19:42:28 shown | 978ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 16:21:58 | 728ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 22:51:27 | 1118ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 22:28:21 | 9838ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-05 12:48:33 | 1726ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-30 12:33:49 | 2867ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 02:16:03 | 10448ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-03 06:33:04 | 1806ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-01 07:40:44 | 1298ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 18:07:20 | 2575ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 10:59:10 | 1336ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 09:49:49 | 1487ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 04:36:57 | 1150ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 19:09:47 | 3211ms | 2 NS 2 A 1 MX | 🔓 Insecure |