rcs-it.dk DNS records

🖥️ Nameservers2 records 92ms

Nameserver	IP addresses	PTR	ASN / ISP
crystal.ns.cloudflare.com	108.162.194.202 162.159.38.202 172.64.34.202 2606:4700:50::a29f:26ca 2803:f800:50::6ca2:c2ca 2a06:98c1:50::ac40:22ca	crystal.ns.cloudflare.com crystal.ns.cloudflare.com crystal.ns.cloudflare.com crystal.ns.cloudflare.com crystal.ns.cloudflare.com crystal.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jaziel.ns.cloudflare.com	108.162.195.55 162.159.44.55 172.64.35.55 2606:4700:58::a29f:2c37 2803:f800:50::6ca2:c337 2a06:98c1:50::ac40:2337	jaziel.ns.cloudflare.com jaziel.ns.cloudflare.com jaziel.ns.cloudflare.com jaziel.ns.cloudflare.com jaziel.ns.cloudflare.com jaziel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 74ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.215.161.69	1800s	relayingsmtp.wtm-rcs.dk	AS47292	Sentia Denmark A/S	91.215.160.0/22	🇩🇰 Denmark	Silkeborg

📧 MX Records1 records 118ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	rcsit-dk0i.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::10 2a01:111:f403:ca04::9 2a01:111:f403:ca48::8 52.101.103.140 52.101.209.153 52.101.68.8 52.101.73.155	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00203.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 395ms

TXT Record
MS=ms77458075
v=spf1 a mx include:spf.mtaroutes.com include:spf.protection.outlook.com include:_custspf.one.com ip4:91.215.163.48/29 ip4:91.215.161.24/29 -all

✉️ SPF

Policy	Record (rcs-it.dk)
-all (hard fail)	v=spf1 a mx include:spf.mtaroutes.com include:spf.protection.outlook.com include:_custspf.one.com ip4:91.215.163.48/29 ip4:91.215.161.24/29 -all

📨 DMARC

Policy	Record (_dmarc.rcs-it.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:5ygyuzpu@ag.dmarcian-eu.com; ruf=mailto:dmarc-reports@rcs.dk; aspf=s; adkim=s; sp=quarantine; fo=1; ri=86400; pct=100

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC271ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2413516668
Primary NS (MNAME)	crystal.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

92ms

A

74ms

MX

118ms

AAAA

103ms

TXT

395ms

CAA

159ms

HTTPS

141ms

TLSA

880ms

SOA

0ms

MTA-STS

210ms

DNSSEC

271ms

SRV

221ms

Total

2260ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 16:20:34	2260ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-26 10:04:23	2189ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-25 11:17:23	743ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-23 21:21:18	2245ms	2 NS 1 A 1 MX	❓ Unknown	View
2026-07-13 19:15:32	2101ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-08 16:49:08	11023ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-27 20:19:15	1835ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-19 10:59:19	1201ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 12:06:44	1815ms	2 NS 1 A 1 MX	🔓 Insecure	View