blackhole.dk DNS records

🖥️ Nameservers2 records 82ms

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 Records1 records 8ms

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	Copenhagen

📧 MX Records5 records 7ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	43200s	aspmx.l.google.com	142.251.9.27 2a00:1450:4010:c01::1b	rc-in-f27.1e100.net lh-in-x1b.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	43200s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4000:1025::1b	lcdels-in-f26.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	43200s	alt2.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
10	43200s	aspmx3.googlemail.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	43200s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4000:1025::1b	lcdels-in-f26.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 61ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC116ms

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

Key type	Algorithm	Public key
KSK	ECDSA P-256/SHA-256	l8sqRTaLKprN+2fwRDJHovrxeiPjr2NrZ6dq802r…
ZSK	ECDSA P-256/SHA-256	6FF+6EioOQByByV26GW7O5RpVlx7jD9OwqFOLe+Q…

🏷️ SOA6ms

Field	Value
Serial	2026081001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

82ms

A

8ms

MX

7ms

AAAA

25ms

TXT

61ms

CAA

8ms

HTTPS

22ms

TLSA

387ms

SOA

6ms

MTA-STS

7ms

DNSSEC

116ms

SRV

0ms

Total

1592ms

🕐 Scan History

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