contractbook.dk DNS records

🖥️ Nameservers2 records 30ms

Nameserver	IP addresses	PTR	ASN / ISP
charles.ns.cloudflare.com	108.162.193.83 172.64.33.83 173.245.59.83 2606:4700:58::adf5:3b53 2803:f800:50::6ca2:c153 2a06:98c1:50::ac40:2153	charles.ns.cloudflare.com charles.ns.cloudflare.com charles.ns.cloudflare.com charles.ns.cloudflare.com charles.ns.cloudflare.com charles.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mary.ns.cloudflare.com	108.162.192.134 172.64.32.134 173.245.58.134 2606:4700:50::adf5:3a86 2803:f800:50::6ca2:c086 2a06:98c1:50::ac40:2086	mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com mary.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.202.211.1	300s	—	AS209242	Cloudflare London, LLC	198.202.211.0/24	🇺🇸 United States	—

📧 MX Records5 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	142.251.1.27 2a00:1450:4010:c08::1a 2a00:1450:4010:c08::1a	lb-in-f27.1e100.net lg-in-f26.1e100.net lg-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4000:1025::1a	lcdels-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4013:813::1a	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)1 records 25ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2620:cb:2000::1	300s	—	AS13335	Cloudflare, Inc.	2620:cb:2000:0:0:0:0:0/48	🇺🇸 United States	—

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 138ms

TXT Record
aQy7Ek8vsfqDVxZJ
google-site-verification=tmgPwM1AQr0BuDfblM7Gta7vq2xqNotbJZxlMD0YgEs
v=spf1 include:_spf.google.com include:mail.zendesk.com include:web.shared.mysmtp.com -all

✉️ SPF

Policy	Record (contractbook.dk)
-all (hard fail)	v=spf1 include:_spf.google.com include:mail.zendesk.com include:web.shared.mysmtp.com -all

📨 DMARC

Policy	Record (_dmarc.contractbook.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:637795eb18659@ag.eu.dmarcly.com; ruf=mailto:637795eb18659@fo.eu.dmarcly.com; sp=reject;

📬 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)

🔐 DNSSEC101ms

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

🏷️ SOA0ms

Field	Value
Serial	2413511918
Primary NS (MNAME)	charles.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

30ms

A

29ms

MX

30ms

AAAA

25ms

TXT

138ms

CAA

27ms

HTTPS

25ms

TLSA

1915ms

SOA

0ms

MTA-STS

44ms

DNSSEC

101ms

SRV

43ms

Total

3081ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 22:45:15	3081ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-08-28 11:27:46	1988ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-08-10 16:19:10	7304ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-07-25 18:46:16	1515ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-07-23 17:17:39	2202ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-07-08 14:10:27	18961ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-07-02 00:01:03	2344ms	2 NS 1 A 5 MX	🔓 Insecure	View
2026-06-16 22:11:01	543ms	2 NS 1 A 5 MX	🔓 Insecure	View