bluekolding.dk

📜 Historical scan 2026-06-19 09:54:39 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bluekolding.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 6 March 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.13 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by bluekolding-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.

🖥️ Nameservers#

2 records 51ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	185.25.141.9 2a02:2339:4006:10d::4171:4171	ns1.scannet.dk ns1.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.scannet2.dk	2a02:2339:1:112:0:5:1:b11 91.197.248.72	ns2.scannet.dk ns2.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.13	600s	linux13.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	bluekolding-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::b 2a01:111:f403:ca04::e 2a01:111:f403:ca09::c 52.101.68.32 52.101.68.5 52.101.68.8 52.101.73.1	mail-du2pr03cu00102.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.98.16.91

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 140ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	1	0	5061	sipfed.online.lync.com

📝 TXT Records#

5 records 250ms

TXT Record
6jema7cjp5gr0spotmv7c0d43
apple-domain-verification=LVZfyi2uImaAF8wC
O0D0E88389
PYTIYOLQBnddRrEfCDgquxYsS00dCyNCPI5VgsmVp3VWtXyxHdoJqbHv0310m789fEcyG5K8MnrWNhirDsuSig==
v=spf1 ip4:83.91.89.67 ip4:83.91.89.73 ip4:83.91.89.75 ip4:152.115.57.139 ip4:91.231.147.122 include:spf.protection.outlook.com include:geohosting.dk -all

✉️ SPF#

Policy	Record (bluekolding.dk)
-all (hard fail)	v=spf1 ip4:83.91.89.67 ip4:83.91.89.73 ip4:83.91.89.75 ip4:152.115.57.139 ip4:91.231.147.122 include:spf.protection.outlook.com include:geohosting.dk -all

📨 DMARC#

Policy	Record (_dmarc.bluekolding.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarc_agg@vali.email; ri=84600;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 22:05:57

www	185.21.40.13 (AS48854) (address records, no CNAME)
www vs bare domain	Same network bluekolding.dk: 185.21.40.13 (AS48854) www.bluekolding.dk: 185.21.40.13 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-bluekolding-dk._domainkey.bluekoldingdk.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-bluekolding-dk._domainkey.bluekoldingdk.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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

136ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2026061801
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-09 23:01:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-03-06
Expires	2028-03-31 (531d)

📋 WHOIS#

⏱️ Lookup Timing#

51ms

44ms

42ms

AAAA

46ms

TXT

250ms

CAA

62ms

HTTPS

35ms

TLSA

370ms

SOA

0ms

MTA-STS

136ms

DNSSEC

136ms

SRV

140ms

Total

1046ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 20:45:04	1088ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 15:36:41	1147ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 09:54:39 shown	1046ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 15:16:02	1782ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 15:05:20	1009ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 15:03:15	3416ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 15:00:23	2880ms	2 NS 1 A 1 MX	🔒 Secure