at-systems.dk

📜 Historical scan 2026-09-16 17:10:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

at-systems.dk is a .dk domain served by 2 nameservers (carol.ns.cloudflare.com, jerry.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.176 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by atsystems-dk0e.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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#

2 records 36ms

Nameserver	IP addresses	PTR	ASN / ISP
carol.ns.cloudflare.com	108.162.192.80 172.64.32.80 173.245.58.80 2606:4700:50::adf5:3a50 2803:f800:50::6ca2:c050 2a06:98c1:50::ac40:2050	carol.ns.cloudflare.com carol.ns.cloudflare.com carol.ns.cloudflare.com carol.ns.cloudflare.com carol.ns.cloudflare.com carol.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jerry.ns.cloudflare.com	108.162.193.182 172.64.33.182 173.245.59.182 2606:4700:58::adf5:3bb6 2803:f800:50::6ca2:c1b6 2a06:98c1:50::ac40:21b6	jerry.ns.cloudflare.com jerry.ns.cloudflare.com jerry.ns.cloudflare.com jerry.ns.cloudflare.com jerry.ns.cloudflare.com jerry.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.176	300s	linux287.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	atsystems-dk0e.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::d 2a01:111:f403:ca21::8 2a01:111:f403:ca48::c 52.101.181.156 52.101.185.114 52.101.209.28 52.101.68.10	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-dbbpr03cu00102.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)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 61ms

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

📝 TXT Records#

4 records 190ms

TXT Record
google-site-verification=vj_hIcBW7nzVvVte7icVrJdoL1aqe6CZvyEBzHWOBsQ
MS=ms46881877
v=DMARC1; p=none; rua=mailto:jht@at-systems.dk
v=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all

✉️ SPF#

Policy	Record (at-systems.dk)
~all (soft fail)	v=spf1 include:_spf.google.com 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 2026-10-10 03:36:24

www CNAME	at-systems.dk (all on at-systems.dk) → 93.191.156.176 (AS48854)
www vs bare domain	Same network at-systems.dk: 93.191.156.176 (AS48854) www.at-systems.dk: 93.191.156.176 (AS48854)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u17802340.wl091.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u17802340.wl091.sendgrid.net	RSA · ~1024 bit below 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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.at-systems.dk	3vfe2of-NGUAi8BhKtIMzhvFXm0CUoH_jKvkWHpoD3g
TXT	_acme-challenge.at-systems.dk	fiErYZr1_8UrMkkSSYU4ezHFpgPnrHRBURuecF5j6sg

🔗 TLSA / DANE#

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

🔐 DNSSEC#

118ms

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	2414850386
Primary NS (MNAME)	carol.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#

36ms

37ms

40ms

AAAA

35ms

TXT

190ms

CAA

38ms

HTTPS

43ms

TLSA

430ms

SOA

0ms

MTA-STS

71ms

DNSSEC

118ms

SRV

61ms

Total

1370ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 03:36:23	5636ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-03 03:04:10	6401ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-29 15:43:07	1516ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-27 22:45:38	780ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-26 22:19:10	870ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-25 22:12:44	1843ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-22 04:23:29	1320ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-16 17:10:17 shown	1370ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-08 05:44:09	899ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-06 13:31:21	1433ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 19:25:48	1194ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-24 16:03:50	3221ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-12 00:11:08	1810ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-20 13:09:24	674ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 13:47:07	831ms	2 NS 1 A 1 MX	🔓 Insecure