sif.dk DNS records

🖥️ Nameservers2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
81.95.249.247	3600s	dw10-d003.dw-mgmt.lan	AS48854	team.blue Denmark A/S	81.95.240.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sif-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca09::26 2a01:111:f403:ca09::7 2a01:111:f403:ca48::8 52.101.73.145 52.101.73.24 52.101.73.28 52.101.73.30	mail-dbapr03cu00100.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-as8pr05cu00300.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
🔶 Autoconfig	sif.dw10.dynamicweb-cms.com → 81.95.249.247

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 66ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records3 records 154ms

TXT Record
4cm7n5if58v1pnhdimagnfn6sa
apple-domain-verification=kow6oFk9oFJfU5hp
v=spf1 ip4:194.255.17.241 ip4:178.23.241.246 ip4:94.137.136.148 ip4:5.103.118.218 ip4:2.106.123.214 ip4:62.116.219.82/28 ip4:94.137.140.80/28 ip4:94.137.140.85 include:spf.protection.outlook.com include:spf-eu.emailsignatures365.com include:spf.hostnordic.com -all

✉️ SPF

Policy	Record (sif.dk)
-all (hard fail)	v=spf1 ip4:194.255.17.241 ip4:178.23.241.246 ip4:94.137.136.148 ip4:5.103.118.218 ip4:2.106.123.214 ip4:62.116.219.82/28 ip4:94.137.140.80/28 ip4:94.137.140.85 include:spf.protection.outlook.com include:spf-eu.emailsignatures365.com include:spf.hostnordic.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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.sif.dk	sif.dw10.dynamicweb-cms.com

🔗 TLSA / DANE

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

🔐 DNSSEC89ms

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

🏷️ SOA0ms

Field	Value
Serial	2026052804
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

35ms

A

42ms

MX

31ms

AAAA

39ms

TXT

154ms

CAA

48ms

HTTPS

48ms

TLSA

381ms

SOA

0ms

MTA-STS

64ms

DNSSEC

89ms

SRV

66ms

Total

1069ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 10:29:55	1069ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 16:43:28	2402ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 13:28:27	1187ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 04:23:39	687ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 06:52:31	1119ms	2 NS 1 A 1 MX	🔒 Secure	View