rkmu.dk DNS records

🖥️ Nameservers3 records 133ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.efif.dk	195.254.168.23	ns.efif.dk	AS51073 Aarhus Business College
ns2.efif.dk	195.254.168.12	ns2.efif.dk	AS51073 Aarhus Business College
ns3.efif.dk	20.23.170.35	—	AS8075 Microsoft Corporation

🌍 A Records1 records 144ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
217.116.232.215	3600s	215.giga-ptr.232.116.217.in-addr.arpa web15.gigahost.dk	AS47292	Sentia Denmark A/S	217.116.224.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 72ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rkmu-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::a 2a01:111:f403:ca04::f 2a01:111:f403:ca09::a 52.101.68.36 52.101.73.19 52.101.73.30 52.101.73.4	mail-db5pr02cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 406ms

TXT Record
MS=ms99353817
v=spf1 redirect=_spf.efif.dk

✉️ SPF

Policy	Record (rkmu.dk)
no all — incomplete SPF	v=spf1 redirect=_spf.efif.dk

📨 DMARC

Policy	Record (_dmarc.rkmu.dk)
p=reject	v=DMARC1;p=reject;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)

🔐 DNSSEC405ms

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

🏷️ SOA0ms

Field	Value
Serial	2019012503
Primary NS (MNAME)	ns.efif.dk
Responsible (RNAME)	dns-zc@efif.dk
Refresh	14400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

133ms

A

144ms

MX

72ms

AAAA

140ms

TXT

406ms

CAA

133ms

HTTPS

136ms

TLSA

749ms

SOA

0ms

MTA-STS

155ms

DNSSEC

405ms

SRV

223ms

Total

2738ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 01:02:31	2738ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 16:02:25	1095ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-24 08:25:23	4089ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-18 23:37:11	9304ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-13 10:42:48	2666ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 12:50:02	5403ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-07 07:21:52	11495ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-08-01 15:06:46	8523ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-26 23:22:20	5744ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 22:07:03	3396ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-22 21:17:11	7387ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 16:25:49	971ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-10 12:20:17	979ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-08 12:03:07	1762ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-04 22:25:11	2906ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 08:10:41	737ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 09:07:12	1614ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 02:05:00	2183ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 00:45:35	1041ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 04:51:39	1259ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:24:10	3452ms	3 NS 1 A 1 MX	🔒 Secure	View