sfb-mail.dk DNS records

🖥️ Nameservers2 records 40ms

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 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.163.39.111	43200s	—	AS3342	Cibicom A/S	193.163.36.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sfbmail-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::7 2a01:111:f403:ca04::9 2a01:111:f403:ca04::b 52.101.73.1 52.101.73.15 52.101.73.28 52.101.73.30	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00204.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 67ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 167ms

TXT Record
MS=ms29168854
v=spf1 a:vpn.sfb-mail.dk a:smtp.8989.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

✉️ SPF

Policy	Record (sfb-mail.dk)
-all (hard fail)	v=spf1 a:vpn.sfb-mail.dk a:smtp.8989.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

📨 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

🔗 TLSA / DANE

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

🔐 DNSSEC83ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080801
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

40ms

A

44ms

MX

40ms

AAAA

44ms

TXT

167ms

CAA

48ms

HTTPS

39ms

TLSA

178ms

SOA

0ms

MTA-STS

47ms

DNSSEC

83ms

SRV

67ms

Total

822ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 14:45:39	822ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-08 23:07:31	1562ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 23:20:52	7142ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-28 20:51:45	5969ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-14 02:21:35	1273ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-01 18:55:53	1042ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 08:04:36	762ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 06:47:46	2176ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 12:49:23	1034ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 02:30:15	2115ms	2 NS 1 A 1 MX	🔒 Secure	View