3blaa.dk

Records from scan: 2026-09-30 16:55:09 · 1045ms total · last checked 2026-10-16 09:41 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3blaa.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 6 February 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.229.236.30 is hosted by Edelskjold Holding ApS (AS215686) in Denmark. Mail is handled by 3blaa-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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.229.236.30	3600s	hosting.merkurnord.dk	AS215686	Edelskjold Holding ApS	91.229.236.0/24	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	3blaa-dk.mail.protection.outlook.com	2a01:111:f403:ca09::a 2a01:111:f403:ca21::c 2a01:111:f403:ca21::e 2a01:111:f403:ca48::a 52.101.181.153 52.101.209.28 52.101.73.120 52.101.91.21	mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-matpr05cu00105.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 114ms

TXT Record
anthropic-domain-verification-yvpjwc=agDRIEzPp36wKymnCsRgLTwDF
bw=lzjCK2fXxUZOE54c94JUaaCqcQO4tT0mOwaDIGqGhgOO
v=spf1 ip4:91.229.236.30 include:spf.protection.outlook.com include:spf.mtasv.net ip4:116.203.167.208 -all

✉️ SPF#

Policy	Record (3blaa.dk)
-all (hard fail)	v=spf1 ip4:91.229.236.30 include:spf.protection.outlook.com include:spf.mtasv.net ip4:116.203.167.208 -all

📨 DMARC#

Policy	Record (_dmarc.3blaa.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:kw4mtjma@ag.eu.dmarcian.com;

📬 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#

checked 2026-10-07 19:17:04

www CNAME	3blaa.dk (all on 3blaa.dk) → 91.229.236.30 (AS215686)
www vs bare domain	Same network 3blaa.dk: 91.229.236.30 (AS215686) www.3blaa.dk: 91.229.236.30 (AS215686)
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	selector1-3blaa-dk._domainkey.deblaamaend.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-3blaa-dk._domainkey.deblaamaend.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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

72ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2026082801
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-13 10:58:12

Field	Value
Registrar	CURANET A/S
Registered	2001-02-06
Expires	2027-03-31 (165d)

🔗 Same registrant#

1 domain

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
3blå.dk	CURANET A/S

📋 WHOIS#

⏱️ Lookup Timing#

46ms

41ms

AAAA

37ms

TXT

114ms

CAA

39ms

HTTPS

31ms

TLSA

589ms

SOA

34ms

MTA-STS

53ms

DNSSEC

72ms

SRV

68ms

Total

1045ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 16:55:09 shown	1045ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 09:04:55	1104ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 09:43:23	631ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-30 07:10:31	2310ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 03:27:37	788ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 16:25:04	2228ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-15 11:11:56	1068ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 13:57:07	2443ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 10:53:48	1181ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 00:21:05	1509ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:00:07	2212ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:50:05	1836ms	2 NS 1 A 1 MX	🔒 Secure