rcbyg.dk

📜 Historical scan 2026-10-04 05:35:48 · ← 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 38ms

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 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	600s	smtp.google.com	209.85.233.26 209.85.233.27 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1a 2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1b 2a00:1450:4010:c03::1b 2a00:1450:4010:c0e::1b 2a00:1450:4010:c0e::1b 64.233.161.26 74.125.131.26 74.125.131.27	lr-in-f26.1e100.net lr-in-f27.1e100.net lh-in-x1a.1e100.net lh-in-f26.1e100.net lr-in-f26.1e100.net lr-in-x1a.1e100.net lr-in-f27.1e100.net lr-in-x1b.1e100.net lu-in-f27.1e100.net lu-in-x1b.1e100.net lh-in-f26.1e100.net lu-in-f26.1e100.net lu-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 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 148ms

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#

72ms

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

🏷️ SOA#

24ms

Field	Value
Serial	2026100300
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#

38ms

30ms

AAAA

33ms

TXT

148ms

CAA

56ms

HTTPS

59ms

TLSA

47ms

SOA

24ms

MTA-STS

76ms

DNSSEC

72ms

SRV

69ms

Total

605ms

🕐 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 shown	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	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