irby.dk is a .dk domain served by 2 nameservers (harmony.ns.cloudflare.com, kobe.ns.cloudflare.com). It was registered on 19 April 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.61.100.187 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by irby-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 87.61.100.187 | 600s | 0x573d64bb.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.61.0.0/17 | 🇩🇰 Denmark | Aarhus |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.179.152 |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (irby.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.irby.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:pjmeh2iq@ag.eu.dmarcian.com,mailto:dmarc@irby.dk; ruf=mailto:dmarc@irby.dk; pct=100 |
| www | 87.61.100.187 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| BIMI | v=BIMI1;l=https://www.irby.dk/download/bimi-logo.svg |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit | |
| selector1 | selector1-irby-dk._domainkey.irbydk.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-irby-dk._domainkey.irbydk.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: 1/10 · 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 | 2407470179 |
| Primary NS (MNAME) | harmony.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Netsite A/S |
| Registered | 2011-04-19 |
| Expires | 2027-04-30 (195d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 12:54:58 | 1756ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 06:44:28 | 1069ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 05:56:11 | 1514ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 05:32:53 | 3015ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 18:02:28 | 3394ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 04:14:15 | 1750ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 21:42:47 | 1805ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-03 08:41:02 | 1707ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-31 23:53:12 | 2080ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-20 16:16:42 | 10378ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-18 10:59:35 | 10065ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 18:17:15 | 3441ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 19:21:20 | 2424ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-28 19:28:52 | 1043ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-28 18:40:19 | 1305ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 13:34:57 shown | 4763ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 08:02:45 | 1461ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:53:15 | 4892ms | 2 NS 1 A 1 MX | 🔒 Secure |