struerfrifagskole.dk

Records from scan: 2026-10-02 17:17:42 · 940ms total · last checked 2026-10-18 13:40 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

struerfrifagskole.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 13 September 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.109.52 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by struerfrifagskole-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 29ms

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 Records#

1 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.109.52	3600s	web12.curanet.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 23ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	struerfrifagskole-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca21::8 2a01:111:f403:ca38::a 2a01:111:f403:ca48::12 52.101.103.143 52.101.73.120 52.101.73.126 52.101.73.145	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 48ms

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

📝 TXT Records#

4 records 122ms

TXT Record
adobe-idp-site-verification=508b0c2cb5edfeb9e435faa47b068dc25fdd57d5dc3b7074685834a97f845b9f
apple-domain-verification=XZQvzHDP4UGILn9B
MS=ms88551086
v=spf1 include:spf.protection.outlook.com include:spf.team.blue -all

✉️ SPF#

Policy	Record (struerfrifagskole.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.team.blue -all

📨 DMARC#

Policy	Record (_dmarc.struerfrifagskole.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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

🧩 Web & zone#

checked 2026-10-11 03:36:02

www	94.231.109.52 (AS48854) (address records, no CNAME)
www vs bare domain	Same network struerfrifagskole.dk: 94.231.109.52 (AS48854) www.struerfrifagskole.dk: 94.231.109.52 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-struerfrifagskole-dk._domainkey.struerskolen.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-struerfrifagskole-dk._domainkey.struerskolen.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

error include:spf.team.blue has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

65ms

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

🏷️ SOA#

29ms

Field	Value
Serial	2026061502
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-05 17:29:32

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-09-13
Expires	2027-09-30 (346d)

📋 WHOIS#

⏱️ Lookup Timing#

29ms

28ms

23ms

AAAA

24ms

TXT

122ms

CAA

21ms

HTTPS

35ms

TLSA

606ms

SOA

29ms

MTA-STS

35ms

DNSSEC

65ms

SRV

48ms

Total

940ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 17:17:42 shown	940ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 21:21:54	795ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 00:02:00	839ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-02 22:10:34	794ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 02:51:50	895ms	2 NS 1 A 1 MX	🔒 Secure