systematic.dk

📜 Historical scan 2026-08-17 03:46:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

systematic.dk is a .dk domain served by 2 nameservers (rajeev.ns.cloudflare.com, selah.ns.cloudflare.com). It was registered on 28 March 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.64.205 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by systematic-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 58ms

Nameserver	IP addresses	PTR	ASN / ISP
rajeev.ns.cloudflare.com	108.162.193.224 172.64.33.224 173.245.59.224 2606:4700:58::adf5:3be0 2803:f800:50::6ca2:c1e0 2a06:98c1:50::ac40:21e0	rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com rajeev.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
selah.ns.cloudflare.com	108.162.194.21 162.159.38.21 172.64.34.21 2606:4700:50::a29f:2615 2803:f800:50::6ca2:c215 2a06:98c1:50::ac40:2215	selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com selah.ns.cloudflare.com selah.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 64ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.64.205	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.155.211	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 62ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	systematic-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::f 2a01:111:f403:ca09::20 2a01:111:f403:ca09::c 52.101.68.21 52.101.68.25 52.101.68.27 52.101.68.39	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.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

🔷 AAAA Records (IPv6)#

2 records 65ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:9bd3	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:40cd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 66ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.64.205,172.67.155.211 ech=AEX+DQBBfQAgACD0+eoo97ntxIHgJkUEninKEUkV8+zwxvFJbenUdQSTbgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:9bd3,2606:4700:3035::6815:40cd

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-18 14:28:50

www	104.21.64.205 172.67.155.211 2606:4700:3034::ac43:9bd3 2606:4700:3035::6815:40cd (AS13335) (address records, no CNAME)
www vs bare domain	Same network systematic.dk: 104.21.64.205 172.67.155.211 2606:4700:3034::ac43:9bd3 2606:4700:3035::6815:40cd (AS13335) www.systematic.dk: 104.21.64.205 172.67.155.211 2606:4700:3034::ac43:9bd3 2606:4700:3035::6815:40cd (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-systematic-dk._domainkey.systematic.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-systematic-dk._domainkey.systematic.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.systematic.dk	7W4lacio1bYbYblRJbHWqh_wUe9caHmtoBU9EI9w328
TXT	_acme-challenge.systematic.dk	Vs52W8TeFjPBFAj2MINv6iShsxBIVdAzfDh4PiwFWr0

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9089ms

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	2412384307
Primary NS (MNAME)	rajeev.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 12:34:39

Field	Value
Registrar	Eurodns S.A
Registered	1996-03-28
Expires	2027-03-31 (161d)

🔗 Same registrant#

11 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
cicero-lms.dk	Eurodns S.A
cicero-surf.dk	Eurodns S.A
columnacura.dk	Eurodns S.A
columnafhir.dk	Eurodns S.A
curalearning.dk	Eurodns S.A
curaportal.dk	Eurodns S.A
curaudrulning.dk	Eurodns S.A
lær.dk	Eurodns S.A
mitskolebibliotek.dk	Eurodns S.A
servicelogistik.dk	Eurodns S.A
sitaware.dk	Eurodns S.A

📋 WHOIS#

⏱️ Lookup Timing#

58ms

64ms

62ms

AAAA

65ms

TXT

352ms

CAA

80ms

HTTPS

66ms

TLSA

1152ms

SOA

0ms

MTA-STS

114ms

DNSSEC

9089ms

SRV

108ms

Total

11369ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-18 14:28:50	955ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-17 12:41:20	1916ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-05 21:50:31	1706ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 21:36:32	1084ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-13 17:43:31	1915ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 10:50:26	1475ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 10:41:37	1468ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 09:34:50	1089ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-18 09:28:48	5238ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-17 03:46:25 shown	11369ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-13 00:57:25	2499ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 19:48:23	2172ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-19 23:24:35	3065ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 02:17:59	1116ms	2 NS 2 A 1 MX	🔓 Insecure