sefflyt.dk DNS records

🖥️ Nameservers2 records 39ms

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 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.47.247.18	3600s	one.com.webforward.g1i.one	AS51468	One.com A/S	195.47.247.0/24	—	—

📧 MX Records1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sefflyt-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::10 2a01:111:f403:ca04::6 2a01:111:f403:ca09::20 52.101.68.15 52.101.73.26 52.101.73.28 52.101.73.8	mail-db7pr03cu00401.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am0pr04cu00500.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 129ms

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

📝 TXT Records2 records 187ms

TXT Record
MS=ms58533147
v=spf1 include:spf.curanet.dk include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.dixa.io ip4:176.22.94.75 ip4:13.80.50.37 ip4:85.27.128.30 ip6:2603:10a6:102:245::12 -all

✉️ SPF

Policy	Record (sefflyt.dk)
-all (hard fail)	v=spf1 include:spf.curanet.dk include:spf.mailanyone.net include:spf.protection.outlook.com include:spf.dixa.io ip4:176.22.94.75 ip4:13.80.50.37 ip4:85.27.128.30 ip6:2603:10a6:102:245::12 -all

📨 DMARC

Policy	Record (_dmarc.sefflyt.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:itdrift@sef.dk; ruf=mailto:itdrift@sef.dk; fo=1; 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)

🔐 DNSSEC95ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080301
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

39ms

A

39ms

MX

48ms

AAAA

51ms

TXT

187ms

CAA

45ms

HTTPS

34ms

TLSA

180ms

SOA

0ms

MTA-STS

55ms

DNSSEC

95ms

SRV

129ms

Total

1302ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-06 01:28:09	1302ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-30 17:32:33	17095ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-28 22:38:15	3445ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 22:27:15	26127ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-04 11:55:56	1963ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 04:19:08	3565ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 19:09:52	1131ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 13:49:35	4022ms	2 NS 1 A 1 MX	🔒 Secure	View