rcs-production.dk DNS records

🖥️ Nameservers2 records 28ms

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 Records1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.215.161.69	3200s	relayingsmtp.wtm-rcs.dk	AS47292	Sentia Denmark A/S	91.215.160.0/22	🇩🇰 Denmark	Silkeborg

📧 MX Records4 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3200s	mx1.mtaroutes.com	154.59.104.23 2001:978:2:7::162:100	fe2-r3-in.ams14.l.antispamcloud.com fe1-r3-in.fra02.l.antispamcloud.com	AS43054 N-able Acquisition Company B.V. AS174 Cogent Communications, LLC
20	3200s	mx2.mtaroutes.com	149.13.75.27 2001:978:2:7::162:100	fe1-r3-in.fra02.l.antispamcloud.com fe1-r3-in.fra02.l.antispamcloud.com	AS16633 N-able Technologies, Inc. AS174 Cogent Communications, LLC
30	3200s	mx3.mtaroutes.com	154.59.104.23 2001:978:2:2c::137:100	fe2-r3-in.ams14.l.antispamcloud.com fe2-r3-in.ams14.l.antispamcloud.com	AS43054 N-able Acquisition Company B.V. AS174 Cogent Communications, LLC
40	3200s	mx4.mtaroutes.com	154.59.193.124 2001:978:2:6::f:124	fe3-r3-in.du01.l.antispamcloud.com fe3-r3-in.du01.l.antispamcloud.com	AS16633 N-able Technologies, Inc. AS174 Cogent Communications, LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	rcs-production.dk → 91.215.161.69
🔶 Autoconfig	rcs-production.dk → 91.215.161.69

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 128ms

TXT Record
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-production.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-production.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:5ygyuzpu@ag.dmarcian-eu.com; ruf=mailto:dmarc-reports@rcs.dk; aspf=s; adkim=s; sp=quarantine; fo=1; ri=86400; pct=25

📬 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.rcs-production.dk	rcs-production.dk

🔗 TLSA / DANE4 records 90ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.mtaroutes.com	DANE-EE · SPKI · SHA-256	A10EC56F992E0E0C5B5A3860F281ADAF…
SMTP _25._tcp.mx2.mtaroutes.com	DANE-EE · SPKI · SHA-256	A10EC56F992E0E0C5B5A3860F281ADAF…
SMTP _25._tcp.mx3.mtaroutes.com	DANE-EE · SPKI · SHA-256	A10EC56F992E0E0C5B5A3860F281ADAF…
SMTP _25._tcp.mx4.mtaroutes.com	DANE-EE · SPKI · SHA-256	A10EC56F992E0E0C5B5A3860F281ADAF…

🔐 DNSSEC97ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082501
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

28ms

A

32ms

MX

35ms

AAAA

27ms

TXT

128ms

CAA

26ms

HTTPS

28ms

TLSA

90ms

SOA

0ms

MTA-STS

38ms

DNSSEC

97ms

SRV

44ms

Total

2218ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 18:22:26	2218ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-08 11:23:53	5310ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-27 01:37:52	1807ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-26 09:08:13	2066ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-17 12:08:04	1668ms	2 NS 1 A 4 MX	🔒 Secure	View