siffi.dk

📜 Historical scan 2026-08-27 07:09:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

siffi.dk is a .dk domain served by 4 nameservers (dns1.p03.nsone.net, dns2.p03.nsone.net, dns3.p03.nsone.net and 1 more). It was registered on 6 September 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.157.26.135 is hosted by Amazon.com, Inc. (AS16509) in Germany. Mail is handled by siffi-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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 50ms

Nameserver	IP addresses	PTR	ASN / ISP
dns1.p03.nsone.net	198.51.44.3 2620:4d:4000:6259:7:3:0:1	dns1.p03.nsone.net dns1.p03.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc
dns2.p03.nsone.net	198.51.45.3 2a00:edc0:6259:7:3::2	dns2.p03.nsone.net dns2.p03.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc
dns3.p03.nsone.net	198.51.44.67 2620:4d:4000:6259:7:3:0:3	dns3.p03.nsone.net dns3.p03.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc
dns4.p03.nsone.net	198.51.45.67 2a00:edc0:6259:7:3::4	dns4.p03.nsone.net dns4.p03.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc

🌍 A Records#

2 records 66ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
35.157.26.135	120s	ec2-35-157-26-135.eu-central-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	35.156.0.0/14	🇩🇪 Germany	Frankfurt am Main
63.176.8.218	120s	ec2-63-176-8-218.eu-central-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	63.176.0.0/12	🇩🇪 Germany	Frankfurt am Main

📧 MX Records#

1 records 81ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	siffi-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::2 2a01:111:f403:ca04::b 2a01:111:f403:ca09::a 52.101.73.15 52.101.73.153 52.101.73.155 52.101.73.2	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-as9pr07cu00302.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 Records#

1 records 109ms

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

📝 TXT Records#

2 records 315ms

TXT Record
NETORG19567489.onmicrosoft.com
v=spf1 include:secureserver.net -all

✉️ SPF#

Policy	Record (siffi.dk)
-all (hard fail)	v=spf1 include:secureserver.net -all

📨 DMARC#

Policy	Record (_dmarc.siffi.dk)
p=quarantine	v=DMARC1; p=quarantine; adkim=r; aspf=r; rua=mailto:dmarc_rua@onsecureserver.net;

📬 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 2026-10-15 03:07:21

www	35.157.26.135 63.176.8.218 (AS16509) (address records, no CNAME)
www vs bare domain	Same network siffi.dk: 35.157.26.135 63.176.8.218 (AS16509) www.siffi.dk: 35.157.26.135 63.176.8.218 (AS16509)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2062ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	1757869670
Primary NS (MNAME)	dns1.p01.nsone.net
Responsible (RNAME)	domains+netlify@netlify.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-14 02:47:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2025-09-06
Expires	2027-09-05 (318d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

50ms

66ms

81ms

AAAA

80ms

TXT

315ms

CAA

70ms

HTTPS

54ms

TLSA

656ms

SOA

0ms

MTA-STS

103ms

DNSSEC

2062ms

SRV

109ms

Total

4062ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-01 17:33:04	3843ms	4 NS 2 A 1 MX	🔓 Insecure
2026-08-27 07:09:44 shown	4062ms	4 NS 2 A 1 MX	🔓 Insecure
2026-07-01 08:45:31	1138ms	4 NS 2 A 1 MX	🔓 Insecure
2026-06-23 19:07:07	1381ms	4 NS 2 A 1 MX	🔓 Insecure
2026-06-22 21:03:45	1110ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 11:54:58	943ms	4 NS 2 A 1 MX	🔓 Insecure