cityschool.dk

📜 Historical scan 2026-07-02 00:20:24 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cityschool.dk is a .dk domain served by 4 nameservers (ns1.nhl-data.dk, ns2.nhl-data.dk, ns3.nhl-data.dk and 1 more). It was registered on 18 November 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.48 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by cityschool-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 51ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.nhl-data.dk	185.136.96.11 2a06:fb00:1::1:11	ns1.nhl-data.dk ns1.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
ns2.nhl-data.dk	185.136.97.11 2a06:fb00:1::2:11	ns2.nhl-data.dk ns2.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
ns3.nhl-data.dk	185.136.98.11 2a06:fb00:1::3:11	ns3.nhl-data.dk ns3.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
ns4.nhl-data.dk	185.136.99.11 2a06:fb00:1::4:11	ns4.nhl-data.dk ns4.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd

🌍 A Records#

1 records 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.48	3600s	nt38.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	cityschool-dk.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::6 2a01:111:f403:ca09::9 2a01:111:f403:ca09::c 52.101.68.18 52.101.68.29 52.101.73.2 52.101.73.28	mail-db7pr03cu00507.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am7pr05cu00204.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

📝 TXT Records#

4 records 207ms

TXT Record
mandrill_verify.JyGM8o0WdBP6Kg9Tniyk-g
MS=ms16608494
P-8QsSjre8yG
v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:spf.permido.com -all

✉️ SPF#

Policy	Record (cityschool.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.mandrillapp.com include:spf.permido.com -all

📨 DMARC#

Policy	Record (_dmarc.cityschool.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-07 21:46:59

www	93.191.156.48 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cityschool.dk: 93.191.156.48 (AS48854) www.cityschool.dk: 93.191.156.48 (AS48854)
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#

113ms

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

🏷️ SOA#

48ms

Field	Value
Serial	2024090401
Primary NS (MNAME)	ns1.nhl-data.dk
Responsible (RNAME)	hostmaster@nhl-data.dk
Refresh	10800s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-08 05:17:21

Field	Value
Registrar	NHL DATA ApS
Registered	2013-11-18
Expires	2026-11-30 (40d)

📋 WHOIS#

⏱️ Lookup Timing#

51ms

56ms

49ms

AAAA

59ms

TXT

207ms

CAA

47ms

HTTPS

49ms

TLSA

115ms

SOA

48ms

MTA-STS

76ms

DNSSEC

113ms

SRV

78ms

Total

915ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 21:46:59	1111ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-24 06:30:49	1068ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-02 00:20:24 shown	915ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-16 23:15:21	65535ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:18:45	1981ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:05:34	630ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:01:12	694ms	4 NS 1 A 1 MX	🔓 Insecure