sefic.dk is a .dk domain served by 2 nameservers (arya.ns.cloudflare.com, woz.ns.cloudflare.com). It was registered on 4 February 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.33.18 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.sefic.dk. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.33.18 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.157.152 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.sefic.dk | 87.104.6.11 | 87.104.6.11.static.fibianet.dk | AS44869 FIBIA P/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:2112 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:9d98 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.33.18,172.67.157.152 ech=AEX+DQBBzAAgACDuL1U47DdoVdkUXB7C9EoHNR/ZnpfvKlAFlQbiOxAaFQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2112,2606:4700:3036::ac43:9d98 |
| TXT Record |
|---|
| <ep xmlns='http://ms.net/1'><out><m> <r>87.104.6.11</r> </m></out></ep> |
| v=spf1 ip4:158.255.211.145 ip4:87.104.6.11 include:sefic.dk -all |
| Policy | Record (sefic.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:158.255.211.145 ip4:87.104.6.11 include:sefic.dk -all |
| Flags | Tag | Value |
|---|---|---|
| 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 | 104.21.33.18 172.67.157.152 2606:4700:3031::6815:2112 2606:4700:3036::ac43:9d98 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 2/10 · policy: -all
| 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 | 2407237895 |
| Primary NS (MNAME) | arya.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2024-02-04 |
| Expires | 2031-02-03 (1568d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-28 12:43:17 | 884ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 19:10:39 | 1218ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-17 08:15:18 | 876ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-11 03:51:57 | 1180ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-31 13:34:04 | 1271ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-15 22:22:27 | 1855ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-27 05:18:52 | 903ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 15:30:15 shown | 1536ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 14:06:24 | 1607ms | 2 NS 1 A 1 MX | 🔓 Insecure |