citystudent.dk DNS records

🖥️ Nameservers3 records 54ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
78.46.12.208	600s	dedi5113.your-server.de	AS24940	Hetzner Online GmbH	78.46.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	citystudent-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::3 2a01:111:f403:ca09::c 2a01:111:f403:ca09::f 52.101.103.137 52.101.68.18 52.101.68.29 52.101.68.32	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db3pr0202cu00200.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 72ms

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

📝 TXT Records1 records 166ms

TXT Record
\\\"v=spf1 include:spf.itafdelingen.net include:o._spf.hostedsepo.dk include:spf.protection.outlook.com ip4:178.209.169.116 ip4:178.209.172.72 ip4:185.150.75.22 ip4:77.66.88.254 ip4:77.66.88.129 -all\\\"

✉️ 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

🔗 TLSA / DANE

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

🔐 DNSSEC105ms

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

🏷️ SOA0ms

Field	Value
Serial	2026062402
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

54ms

A

51ms

MX

42ms

AAAA

31ms

TXT

166ms

CAA

49ms

HTTPS

41ms

TLSA

616ms

SOA

0ms

MTA-STS

60ms

DNSSEC

105ms

SRV

72ms

Total

1375ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 01:19:43	1375ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-25 09:30:38	1382ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 21:36:03	4683ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 16:12:46	990ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 21:58:24	65535ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 21:10:20	798ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-16 21:09:09	1908ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-16 21:00:35	681ms	2 NS 1 A 1 MX	🔒 Secure	View