ifu.dk is a .dk domain served by 4 nameservers (ns1.ascio.com, ns2.ascio.com, ns3.ascio.com and 1 more). It was registered on 23 June 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.208.37.87 is hosted by Combell NV (AS34762) in Belgium. Mail is handled by ifudk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 188.208.37.87 | 600s | 188.208.37.87.static.hosted.by.combell-ops.net | AS34762 | Combell NV | 188.208.36.0/23 | 🇧🇪 Belgium | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 100 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=Jo3wJCTItFyU4Qvuf0EYn1iVPixmuAbSh3KMj0wEkN |
| apple-domain-verification=ctA0jZyuANnbfsAt |
| v=spf1 include:u2134740.wl241.sendgrid.net ip4:188.120.91.18 ip4:138.2.137.21 include:spf.protection.outlook.com -all |
| Policy | Record (ifu.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:u2134740.wl241.sendgrid.net ip4:188.120.91.18 ip4:138.2.137.21 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.ifu.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:prfae5mo@ag.dmarcian-eu.com,mailto:mail.authentication@ifu.dk; ruf=mailto:mail.authentication@ifu.dk,mailto:prfae5mo@fr.dmarcian-eu.com; fo=1; |
| www CNAME | ifu.dk (all on ifu.dk) → 188.208.37.87 (AS34762) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u2134740.wl241.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u2134740.wl241.sendgrid.net | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-ifu-dk._domainkey.ifudk.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-ifu-dk._domainkey.ifudk.onmicrosoft.com | 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: 4/10 · 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 | 1781182449 |
| Primary NS (MNAME) | ns1.ascio.com |
| Responsible (RNAME) | hostmaster@anadoma.com |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-06-23 |
| Expires | 2027-06-30 (255d) |
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).
| Domain | Registrar |
|---|---|
| dan-fund.dk | Punktum dk A/S (direct) |
| danfunds.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 16:08:27 shown | 1051ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 18:05:08 | 1156ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 06:20:18 | 1698ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:14:31 | 2402ms | 4 NS 1 A 1 MX | 🔓 Insecure |