blackhole.dk

Records from scan: 2026-10-11 01:35:42 · 489ms total · last checked 2026-10-19 14:54 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

blackhole.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 September 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.150.136.121 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
89.150.136.121	43200s	c-x59968879.customers.hiper-net.dk	AS203953	Hiper A/S	89.150.128.0/18	🇩🇰 Denmark	Frederiksberg

📧 MX Records#

5 records 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	43200s	aspmx.l.google.com	173.194.222.27 2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a	lo-in-f27.1e100.net lt-in-f26.1e100.net lt-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	43200s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	43200s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	43200s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1a	lcdels-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	43200s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	blackhole.dk → 89.150.136.121
🔶 Autoconfig	blackhole.dk → 89.150.136.121

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 139ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (blackhole.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-11 01:35:42

www CNAME	blackhole.dk (all on blackhole.dk) → 89.150.136.121 (AS203953)
www vs bare domain	Same network blackhole.dk: 89.150.136.121 (AS203953) www.blackhole.dk: 89.150.136.121 (AS203953)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.blackhole.dk	blackhole.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

57ms

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

🏷️ SOA#

32ms

Field	Value
Serial	2026101001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-11 01:59:04

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2004-09-02
Expires	2027-09-30 (345d)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

32ms

28ms

AAAA

29ms

TXT

139ms

CAA

35ms

HTTPS

27ms

TLSA

92ms

SOA

32ms

MTA-STS

48ms

DNSSEC

57ms

SRV

60ms

Total

489ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 01:35:42 shown	489ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-30 15:12:22	585ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-09 23:27:50	1207ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-25 23:52:45	1592ms	2 NS 1 A 5 MX	🔒 Secure
2026-08-15 00:27:00	6718ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-25 09:21:32	5289ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-15 23:46:06	1140ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-13 22:13:49	1139ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-02 01:26:04	914ms	2 NS 1 A 5 MX	🔒 Secure
2026-07-02 00:35:13	2830ms	2 NS 1 A 5 MX	🔒 Secure
2026-06-16 14:45:54	3140ms	2 NS 1 A 5 MX	🔒 Secure