cefibu.dk

📜 Historical scan 2026-06-16 20:03:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cefibu.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.8.37.83 is hosted by Norlys Telco A/S (AS3308) in Denmark. Mail is handled by cefibu-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

4 records 127ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	—	—	—
ns2.simply.com	—	—	—
ns3.simply.com	—	—	—
ns4.simply.com	—	—	—

🌍 A Records#

1 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.37.83	—	—	AS3308	Norlys Telco A/S	193.8.36.0/23	🇩🇰 Denmark	Ølstykke

📧 MX Records#

1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	cefibu-dk.mail.protection.outlook.com	52.101.68.18 52.101.68.5 52.101.73.1 52.101.73.153	mail-db4pr02cu00302.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 95ms

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

✉️ SPF#

Policy	Record (cefibu.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 2026-10-13 15:17:58

www	94.231.106.72 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cefibu.dk: 94.231.106.72 (AS48854) www.cefibu.dk: 94.231.106.72 (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#

58ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2021051101
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

127ms

36ms

50ms

AAAA

49ms

TXT

95ms

CAA

41ms

HTTPS

34ms

TLSA

1147ms

SOA

35ms

MTA-STS

127ms

DNSSEC

58ms

SRV

0ms

Total

1519ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 15:17:58	1742ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 22:29:11	648ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-20 12:39:33	1379ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-14 18:10:19	3300ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-02 00:39:57	801ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:07:07	2209ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:04:13	61790ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:03:35 shown	1519ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:00:21	1579ms	4 NS 1 A 1 MX	🔒 Secure