rufruf.dk is a .dk domain served by 3 nameservers (ns1.websupport.sk, ns2.websupport.sk, ns3.websupport.sk). It was registered on 12 August 2026 (WHOIS) and first appeared in the .dk zone on 13 August 2026. Its website address 37.9.175.165 is hosted by WebSupport s.r.o. (AS51013) in Slovakia. Mail is handled by mx10.websupport.cz, mx20.websupport.cz. 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 |
|---|---|---|---|---|---|---|---|
| 37.9.175.165 | 600s | ing.r3.websupport.sk | AS51013 | WebSupport s.r.o. | 37.9.168.0/21 | 🇸🇰 Slovakia | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | web.prod.bts.websupport.sk → 37.9.169.171 |
| 🔶 Autoconfig | web.prod.bts.websupport.sk → 37.9.169.171 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a00:4b40:aaaa:2005::5 | 600s | — | AS51013 | WebSupport s.r.o. | 2a00:4b40:0:0:0:0:0:0/32 | 🇸🇰 Slovakia | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | web.prod.bts.websupport.sk |
| TXT Record |
|---|
| v=spf1 a mx include:_spf.websupport.cz -all |
| Policy | Record (rufruf.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:_spf.websupport.cz -all |
| Policy | Record (_dmarc.rufruf.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 37.9.175.165 2a00:4b40:aaaa:2005::5 (AS51013) (address records, no CNAME) |
| www vs bare domain | Same network rufruf.dk: 37.9.175.165 2a00:4b40:aaaa:2005::5 (AS51013) www.rufruf.dk: 37.9.175.165 2a00:4b40:aaaa:2005::5 (AS51013) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 4/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx10.websupport.cz | DANE-TA · SPKI · SHA-256 | 0E8BB18BBEEFB381BE21BFC1A206D317… |
| SMTP _25._tcp.mx10.websupport.cz | DANE-TA · SPKI · SHA-256 | 6BD9212CE649C659C9CABC6CB60FCFFA… |
| SMTP _25._tcp.mx10.websupport.cz | DANE-TA · SPKI · SHA-256 | C784333D20BCD742B9FDC3236F4E509B… |
| SMTP _25._tcp.mx20.websupport.cz | DANE-TA · SPKI · SHA-256 | 0E8BB18BBEEFB381BE21BFC1A206D317… |
| SMTP _25._tcp.mx20.websupport.cz | DANE-TA · SPKI · SHA-256 | 6BD9212CE649C659C9CABC6CB60FCFFA… |
| SMTP _25._tcp.mx20.websupport.cz | DANE-TA · SPKI · SHA-256 | C784333D20BCD742B9FDC3236F4E509B… |
| 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 | 1786538635 |
| Primary NS (MNAME) | ns1.websupport.sk |
| Responsible (RNAME) | admin@websupport.cz |
| Refresh | 7200s |
| Retry | 2048s |
| Expire | 1048576s |
| Minimum (neg-cache TTL) | 2560s |
| Field | Value |
|---|---|
| Registrar | Gransy s.r.o. |
| Registered | 2026-08-12 |
| Expires | 2027-08-11 (296d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 23:24:52 shown | 1177ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-27 16:07:47 | 1430ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-02 18:39:13 | 10009ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-28 05:47:09 | 1376ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-25 23:11:43 | 1295ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-13 08:47:11 | 8193ms | 3 NS 1 A 2 MX | 🔓 Insecure |