reffen.dk DNS records

🖥️ Nameservers2 records 99ms

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 78ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.182	3600s	webcluster55.webpod11-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 133ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	reffen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::5 2a01:111:f403:ca04::6 2a01:111:f403:ca09::c 52.101.68.5 52.101.73.126 52.101.73.153 52.101.73.30	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am7pr05cu00306.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
🔶 Autoconfig	77.111.240.182

🔷 AAAA Records (IPv6)1 records 116ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:102:80b6:7f66:7b5c:1a8e	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records5 records 319ms

TXT Record
facebook-domain-verification=exjkn04taj8jju08c67icmkcuq2qkp
google-site-verification=JGOAhFO05NN0ZWad9Xwm7tDeLCy3EZjH5ae38kyjoNI
MS=ms99027431
Sendinblue-code:79b125d02191090459333211dbf8f20c
v=spf1 include:spf.protection.outlook.com include:spf.sendinblue.com include:sendgrid.net include:_spf.google.com ~all

✉️ SPF

Policy	Record (reffen.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:spf.sendinblue.com include:sendgrid.net include:_spf.google.com ~all

📨 DMARC

Policy	Record (_dmarc.reffen.dk)
p=none (monitor only)	v=DMARC1; p=none; sp=none; rua=mailto:olifrank+dmarc@streetfooddistrict.dk; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400

📬 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)

🔐 DNSSEC235ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083002
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

99ms

A

78ms

MX

133ms

AAAA

116ms

TXT

319ms

CAA

68ms

HTTPS

109ms

TLSA

861ms

SOA

0ms

MTA-STS

164ms

DNSSEC

235ms

SRV

170ms

Total

2690ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 08:07:25	2690ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 18:53:08	1081ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 07:34:29	977ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 12:16:54	771ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 12:17:31	889ms	2 NS 1 A 1 MX	🔒 Secure	View