yellow1.dk is a .dk domain served by 2 nameservers (ns1.brandbyhand.dk, ns2.brandbyhand.dk). It was registered on 16 May 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 157.230.24.43 is hosted by DigitalOcean, LLC (AS14061) in Germany. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.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 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 |
|---|---|---|---|---|---|---|---|
| 157.230.24.43 | — | 1317664.cloudwaysapps.com | AS14061 | DigitalOcean, LLC | 157.230.0.0/16 | 🇩🇪 Germany | Frankfurt am Main |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | — | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| 🔶 Autoconfig | autoconfig-mf.onlinemail.io → 185.21.40.62 |
| TXT Record |
|---|
| v=spf1 include:spf.onlinemail.io include:spf.curanet.dk -all |
| Policy | Record (yellow1.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.onlinemail.io include:spf.curanet.dk -all |
| Policy | Record (_dmarc.yellow1.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 157.230.24.43 (AS14061) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025121902 |
| Primary NS (MNAME) | ns1.brandbyhand.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2001-05-16 |
| Expires | 2027-06-30 (256d) |