strestrupif.dk

📜 Historical scan 2026-09-30 17:10:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

strestrupif.dk is a .dk domain served by 2 nameservers (jeff.ns.cloudflare.com, natasha.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.6.166 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by strestrupif-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 44ms

Nameserver	IP addresses	PTR	ASN / ISP
jeff.ns.cloudflare.com	108.162.193.124 172.64.33.124 173.245.59.124 2606:4700:58::adf5:3b7c 2803:f800:50::6ca2:c17c 2a06:98c1:50::ac40:217c	jeff.ns.cloudflare.com jeff.ns.cloudflare.com jeff.ns.cloudflare.com jeff.ns.cloudflare.com jeff.ns.cloudflare.com jeff.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
natasha.ns.cloudflare.com	108.162.194.117 162.159.38.117 172.64.34.117 2606:4700:50::a29f:2675 2803:f800:50::6ca2:c275 2a06:98c1:50::ac40:2275	natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com natasha.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 59ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.6.166	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.135.9	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	strestrupif-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::e 2a01:111:f403:ca09::20 2a01:111:f403:ca3c::8 52.101.181.156 52.101.185.114 52.101.68.29 52.101.68.8	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.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

🔷 AAAA Records (IPv6)#

2 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:6a6	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:8709	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.6.166,172.67.135.9 ech=AEX+DQBBIAAgACC0zA43QQEPXf0h948Q6XRjN1sVQRaoZpeWL8pJJzaaYwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:6a6,2606:4700:3034::ac43:8709

📝 TXT Records#

1 records 180ms

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

✉️ SPF#

Policy	Record (strestrupif.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 2026-10-12 08:44:46

www	104.21.6.166 172.67.135.9 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) (address records, no CNAME)
www vs bare domain	Same network strestrupif.dk: 104.21.6.166 172.67.135.9 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.strestrupif.dk: 104.21.6.166 172.67.135.9 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335)
Wildcard	No

🔎 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#

91ms

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

🏷️ SOA#

56ms

Field	Value
Serial	2415484364
Primary NS (MNAME)	jeff.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

44ms

59ms

37ms

AAAA

39ms

TXT

180ms

CAA

48ms

HTTPS

34ms

TLSA

374ms

SOA

56ms

MTA-STS

46ms

DNSSEC

91ms

SRV

58ms

Total

1349ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 22:46:25	1053ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 17:10:15 shown	1349ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 23:47:15	3068ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 19:51:20	1529ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 00:32:04	1178ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 12:39:18	1064ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-14 17:08:37	26418ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-24 19:15:58	1269ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-22 16:37:28	1297ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 13:15:14	5328ms	2 NS 2 A 1 MX	🔓 Insecure