roundzero.dk

📜 Historical scan 2026-10-10 08:36:43 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

roundzero.dk is a .dk domain served by 2 nameservers (rajeev.ns.cloudflare.com, rosa.ns.cloudflare.com). It was registered on 9 October 2026 (WHOIS) and first appeared in the .dk zone on 10 October 2026. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 29ms

Nameserver	IP addresses	PTR	ASN / ISP
rajeev.ns.cloudflare.com	108.162.193.224 172.64.33.224 173.245.59.224 2606:4700:58::adf5:3be0 2803:f800:50::6ca2:c1e0 2a06:98c1:50::ac40:21e0	rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rosa.ns.cloudflare.com	108.162.192.228 172.64.32.228 173.245.58.228 2606:4700:50::adf5:3ae4 2803:f800:50::6ca2:c0e4 2a06:98c1:50::ac40:20e4	rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com rosa.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 173ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (roundzero.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.roundzero.dk)
p=reject	v=dmarc1 p=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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 15:27:32

www	Exists, no address
www vs bare domain	www does not resolve roundzero.dk: 104.21.33.178 172.67.147.173 2606:4700:3031::6815:21b2 2606:4700:3033::ac43:93ad (AS13335) www.roundzero.dk: no address (all like this)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

56ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

40ms

Field	Value
Serial	2417037250
Primary NS (MNAME)	rajeev.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 09:18:27

Field	Value
Registrar	MONTES A/S
Registered	2026-10-09
Expires	2027-10-08 (352d)

📋 WHOIS#

⏱️ Lookup Timing#

29ms

31ms

32ms

AAAA

41ms

TXT

173ms

CAA

37ms

HTTPS

37ms

TLSA

42ms

SOA

40ms

MTA-STS

46ms

DNSSEC

56ms

SRV

58ms

Total

382ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 15:27:32	658ms	2 NS 2 A 3 MX	🔒 Secure
2026-10-11 14:50:00	956ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-10 08:36:43 shown	382ms	2 NS 0 A 0 MX	🔒 Secure