sisu.dk

📜 Historical scan 2026-09-30 15:45:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sisu.dk is a .dk domain served by 2 nameservers (jonah.ns.cloudflare.com, suzanne.ns.cloudflare.com). It was registered on 17 April 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.43.213 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by sisu-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 36ms

Nameserver	IP addresses	PTR	ASN / ISP
jonah.ns.cloudflare.com	108.162.193.186 172.64.33.186 173.245.59.186 2606:4700:58::adf5:3bba 2803:f800:50::6ca2:c1ba 2a06:98c1:50::ac40:21ba	jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com jonah.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
suzanne.ns.cloudflare.com	108.162.194.87 162.159.38.87 172.64.34.87 2606:4700:50::a29f:2657 2803:f800:50::6ca2:c257 2a06:98c1:50::ac40:2257	suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.ns.cloudflare.com suzanne.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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.43.213	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.185.231	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 55ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	sisu-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:c967::a 2a01:111:f403:ca09::22 2a01:111:f403:ca48::c 52.101.103.143 52.101.185.114 52.101.209.31 52.101.68.39	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-cpjpr05cu00102.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-db7pr03cu00607.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 → 52.98.154.136
🔶 Autoconfig	172.67.185.231

🔷 AAAA Records (IPv6)#

2 records 52ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::ac43:b9e7	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:2bd5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 40ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.43.213,172.67.185.231 ech=AEX+DQBBigAgACClcPRSYIi9pRSXEYI2Mp1rDDKFgCgesWfIc4Sj2ogUFwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:b9e7,2606:4700:3036::6815:2bd5

🔌 SRV Records#

2 records 77ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 185ms

TXT Record
MS=msXXXXXXXX
v=spf1 include:spf.protection.outlook.com ip4:94.231.103.45 ~all

✉️ SPF#

Policy	Record (sisu.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com ip4:94.231.103.45 ~all

📨 DMARC#

Policy	Record (_dmarc.sisu.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:76488982ada04cc0ac3f7d9d1f36c969@dmarc-reports.cloudflare.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 2026-10-20 12:18:57

www	104.21.43.213 172.67.185.231 2606:4700:3035::ac43:b9e7 2606:4700:3036::6815:2bd5 (AS13335) (address records, no CNAME)
www vs bare domain	Same network sisu.dk: 104.21.43.213 172.67.185.231 2606:4700:3035::ac43:b9e7 2606:4700:3036::6815:2bd5 (AS13335) www.sisu.dk: 104.21.43.213 172.67.185.231 2606:4700:3035::ac43:b9e7 2606:4700:3036::6815:2bd5 (AS13335)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.sisu.dk	DsvJH2WB7fBclQhF0XXnMygmD_8c4A7d3_rZGgebDbI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

116ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2416250352
Primary NS (MNAME)	jonah.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-20 12:46:10

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-04-17
Expires	2027-06-30 (252d)

🔗 Same registrant#

1 domain

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
sisubasket.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

36ms

40ms

55ms

AAAA

52ms

TXT

185ms

CAA

44ms

HTTPS

40ms

TLSA

381ms

SOA

34ms

MTA-STS

65ms

DNSSEC

116ms

SRV

77ms

Total

1226ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 12:18:57	588ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-14 07:15:20	3687ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-30 15:45:45 shown	1226ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-29 15:38:41	1559ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 03:27:15	1148ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-19 09:23:02	793ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-17 12:52:02	1623ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-10 12:12:34	1971ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-03 12:04:24	1076ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-31 09:43:20	3288ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-26 19:20:10	1083ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-07 08:34:18	1782ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-22 04:00:22	9465ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-21 03:24:59	9382ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 00:26:44	1005ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 19:17:37	922ms	2 NS 2 A 1 MX	🔓 Insecure