rcbyg.dk

📜 Historical scan 2026-06-20 19:23:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rcbyg.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 18 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by smtp.google.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#

3 records 104ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 107ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	600s	smtp.google.com	142.250.110.26 142.250.110.27 142.251.5.27 2a00:1450:400c:c06::1a 2a00:1450:400c:c06::1a 2a00:1450:400c:c06::1b 2a00:1450:400c:c06::1b 2a00:1450:400c:c0d::1a 2a00:1450:400c:c0d::1b 66.102.1.26 66.102.1.27	wf-in-f26.1e100.net wf-in-f27.1e100.net wg-in-f27.1e100.net wb-in-x1a.1e100.net wb-in-f26.1e100.net wb-in-x1b.1e100.net wb-in-f27.1e100.net wf-in-f26.1e100.net wf-in-f27.1e100.net wb-in-f26.1e100.net wb-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC 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 Records#

1 records 454ms

TXT Record
google-site-verification=II-baMTnSNJsVjfubLf2hBQ5QnVNCsD_ARym4PQhDng

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-12 14:12:30

www	NXDOMAIN
www vs bare domain	Neither resolves rcbyg.dk: no address www.rcbyg.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

411ms

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

🏷️ SOA#

104ms

Field	Value
Serial	2026041803
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-12 14:30:32

Field	Value
Registrar	Simply.com A/S
Registered	2026-04-18
Expires	2027-04-17 (178d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

104ms

113ms

107ms

AAAA

126ms

TXT

454ms

CAA

98ms

HTTPS

98ms

TLSA

124ms

SOA

104ms

MTA-STS

80ms

DNSSEC

411ms

SRV

187ms

Total

1227ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 14:12:30	427ms	3 NS 0 A 1 MX	🔒 Secure
2026-10-04 05:35:48	605ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-30 04:58:17	516ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-18 07:15:29	606ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-20 19:23:42 shown	1227ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-20 17:51:48	539ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-19 22:07:35	533ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-17 19:50:00	703ms	3 NS 0 A 1 MX	🔒 Secure