r-byg.dk

📜 Historical scan 2026-06-20 02:00:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

r-byg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 23 July 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by rbyg-dk0c.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 124ms

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#

🌍

No A records found

📧 MX Records#

1 records 122ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rbyg-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::6 2a01:111:f403:ca04::8 2a01:111:f403:ca04::9 52.101.68.16 52.101.73.11 52.101.73.153 52.101.73.8	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.212.216

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 439ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (r-byg.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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#

latest probe, not this scan · checked 2026-10-21 20:31:07

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Only www resolves r-byg.dk: no address www.r-byg.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

240ms

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

🏷️ SOA#

119ms

Field	Value
Serial	2026032501
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 2026-10-16 09:53:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2014-07-23
Expires	2030-07-31 (1376d)

🔗 Same registrant#

2 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
dsjan.dk	Punktum dk A/S (direct)
hvid-hansen.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

124ms

112ms

122ms

AAAA

124ms

TXT

439ms

CAA

112ms

HTTPS

123ms

TLSA

200ms

SOA

119ms

MTA-STS

64ms

DNSSEC

240ms

SRV

479ms

Total

1088ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 20:31:07	463ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-16 09:43:25	2811ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-30 12:08:16	792ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-23 18:26:47	1221ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-25 15:52:48	9833ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-20 02:00:12 shown	1088ms	2 NS 0 A 1 MX	🔒 Secure
2026-06-18 07:29:30	983ms	2 NS 0 A 1 MX	🔒 Secure