rcn.dk

Records from scan: 2026-10-12 23:51:16 · 817ms total · last checked 2026-10-20 07:26 (unchanged)

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rcn.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 21 December 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by smtp.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 44ms

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#

1 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.100	600s	dnsforward.simply.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

5 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	smtp.google.com	173.194.220.26 173.194.220.27 173.194.221.26 2a00:1450:4010:c06::1a 2a00:1450:4010:c06::1a 2a00:1450:4010:c06::1b 2a00:1450:4010:c06::1b 2a00:1450:4010:c09::1a 2a00:1450:4010:c09::1a 2a00:1450:4010:c22::1b 64.233.163.26 64.233.163.27	lk-in-f26.1e100.net lk-in-f27.1e100.net lm-in-f26.1e100.net lj-in-x1a.1e100.net lj-in-f26.1e100.net lj-in-f27.1e100.net lj-in-x1b.1e100.net lk-in-x1a.1e100.net lk-in-f26.1e100.net yulpptr-in-f27.1e100.net lj-in-f26.1e100.net lj-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
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	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 101ms

TXT Record
google-site-verification=dDk-iXRbVW827EWwSGYn5641v6pb4HRpJ4eNWfLfo5Q

✉️ 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#

checked 2026-10-12 23:51:16

www	94.231.103.100 (AS48854) (address records, no CNAME)
www vs bare domain	Same network rcn.dk: 94.231.103.100 (AS48854) www.rcn.dk: 94.231.103.100 (AS48854)
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#

105ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

33ms

Field	Value
Serial	2026101200
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 2026-10-08 14:32:10

Field	Value
Registrar	Simply.com A/S
Registered	2010-12-21
Expires	2026-12-31 (71d)

📋 WHOIS#

⏱️ Lookup Timing#

44ms

38ms

36ms

AAAA

31ms

TXT

101ms

CAA

22ms

HTTPS

27ms

TLSA

95ms

SOA

33ms

MTA-STS

46ms

DNSSEC

105ms

SRV

42ms

Total

817ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 23:51:16 shown	817ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-10 14:37:31	836ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-09 13:47:24	490ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-03 01:15:47	2483ms	3 NS 1 A 5 MX	🔒 Secure
2026-10-01 01:12:26	517ms	3 NS 1 A 5 MX	🔒 Secure
2026-09-25 06:34:36	638ms	3 NS 1 A 5 MX	🔒 Secure
2026-08-27 19:20:09	700ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-24 15:18:27	767ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-23 16:23:59	730ms	3 NS 1 A 5 MX	🔒 Secure
2026-06-18 06:57:47	2424ms	3 NS 1 A 5 MX	🔒 Secure