blackbook.dk DNS records

🖥️ Nameservers2 records 19ms

Nameserver	IP addresses	PTR	ASN / ISP
lana.ns.cloudflare.com	—	—	—
ram.ns.cloudflare.com	—	—	—

🌍 A Records2 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.8.209	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.130.164	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records3 records 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx01.mail.icloud.com	17.42.251.62 17.42.251.62 17.42.251.62 17.56.9.31 17.56.9.31 17.57.152.5 17.57.152.5 17.57.152.5 17.57.152.5 17.57.154.33 17.57.154.33 17.57.155.25 17.57.155.25 17.57.156.30 17.57.156.30	mx01.mail.icloud.com mx02.mail.icloud.com mx3.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com ic4-privaterelay.appleid.com smtp1.ic4-privaterelay.appleid.com mx01.mail.icloud.com mx02.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com	AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc.
20	—	mx02.mail.icloud.com	17.42.251.62 17.42.251.62 17.42.251.62 17.56.9.31 17.56.9.31 17.57.152.5 17.57.152.5 17.57.152.5 17.57.152.5 17.57.154.33 17.57.154.33 17.57.155.25 17.57.155.25 17.57.156.30 17.57.156.30	mx3.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com smtp1.ic4-privaterelay.appleid.com ic4-privaterelay.appleid.com mx01.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com	AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc.
30	—	spam.micusto.com	94.237.28.65	spam.micusto.com	AS202053 UpCloud Ltd

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records1 records 30ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.8.209,172.67.130.164 ech=AEX+DQBBkQAgACClJENMjJCKs8qIfd+04OvwQP4hU5mfUQK6PmcbIChPAAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA=

📝 TXT Records4 records 114ms

TXT Record
apple-domain=oOoVOomMhwoGlTcO
google-site-verification=3axHeftPnz0kNtEeqtCCAvGsy9ufHfFf79NL2PltxTY
v=spf1 include:icloud.com ~all
v=spf1 mx include:_spf.dcmediahosting.com ~all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (blackbook.dk)
~all (soft fail)	v=spf1 include:icloud.com ~all
~all (soft fail)	v=spf1 mx include:_spf.dcmediahosting.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)

🔐 DNSSEC107ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA35ms

Field	Value
Serial	2406010647
Primary NS (MNAME)	lana.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

19ms

A

28ms

MX

28ms

AAAA

27ms

TXT

114ms

CAA

27ms

HTTPS

30ms

TLSA

66ms

SOA

35ms

MTA-STS

30ms

DNSSEC

107ms

SRV

0ms

Total

919ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-03 13:45:42	3974ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-20 10:25:32	1706ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-02 02:23:17	1595ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-23 06:18:21	4826ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-21 17:12:13	1174ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 23:52:15	1078ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-16 14:45:33	919ms	2 NS 2 A 3 MX	🔓 Insecure	View