sprintperformance.dk

📜 Historical scan 2026-06-21 05:49:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sprintperformance.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 12 December 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.232 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by sprintperformance-dk.mail.protection.outlook.com. The zone is DNSSEC-signed but currently fails validation, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 32ms

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 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.232	3600s	linux29.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	sprintperformance-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::5 2a01:111:f403:ca04::9 2a01:111:f403:ca04::d 52.101.68.21 52.101.68.29 52.101.68.3 52.101.73.16	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-as2pr05cu00100.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 → 40.104.116.56
🔶 Autoconfig	185.21.40.232

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 154ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (sprintperformance.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 14:14:09

www	185.21.40.232 (AS48854) (address records, no CNAME)
www vs bare domain	Same network sprintperformance.dk: 185.21.40.232 (AS48854) www.sprintperformance.dk: 185.21.40.232 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

83ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'sprintperformance.dk/DNSKEY/IN': 127.0.0.1#53

🏷️ SOA#

35ms

Field	Value
Serial	2025071002
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 2026-10-15 09:57:28

Field	Value
Registrar	CURANET A/S
Registered	2022-12-12
Expires	2026-12-11 (54d)

🔗 Same registrant#

3 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
inku.dk	CURANET A/S
inkucare.dk	DANDOMAIN A/S
kongruens.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

32ms

46ms

42ms

AAAA

30ms

TXT

154ms

CAA

33ms

HTTPS

42ms

TLSA

116ms

SOA

35ms

MTA-STS

40ms

DNSSEC

83ms

SRV

75ms

Total

549ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-25 23:28:03	853ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-28 18:01:00	837ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 09:33:30	1922ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 11:27:22	1185ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 05:49:46 shown	549ms	2 NS 1 A 1 MX	⚠️ Bogus
2026-06-18 20:52:02	7569ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 01:00:41	1246ms	2 NS 1 A 1 MX	🔒 Secure