citywifi.dk

Records from scan: 2026-10-01 02:27:35 · 643ms total · last checked 2026-10-18 09:23 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

citywifi.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 18 February 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.19 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by citywifi-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 27ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.19	3600s	linux12.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	citywifi-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca3c::8 2a01:111:f403:ca48::8 2a01:111:f403:ca48::a 52.101.209.153 52.101.68.15 52.101.68.39 52.101.91.21	mail-db6pr03cu00105.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-matpr05cu00105.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 → 52.98.154.152
🔶 Autoconfig	185.21.40.19

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 45ms

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

📝 TXT Records#

1 records 131ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:_spf.google.com -all

✉️ SPF#

Policy	Record (citywifi.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.google.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#

checked 2026-10-08 08:46:20

www	185.21.40.19 (AS48854) (address records, no CNAME)
www vs bare domain	Same network citywifi.dk: 185.21.40.19 (AS48854) www.citywifi.dk: 185.21.40.19 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

46ms

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

🏷️ SOA#

36ms

Field	Value
Serial	2023070301
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-11 03:45:30

Field	Value
Registrar	CURANET A/S
Registered	2018-02-18
Expires	2027-02-28 (132d)

📋 WHOIS#

⏱️ Lookup Timing#

27ms

37ms

41ms

AAAA

35ms

TXT

131ms

CAA

24ms

HTTPS

28ms

TLSA

180ms

SOA

36ms

MTA-STS

43ms

DNSSEC

46ms

SRV

45ms

Total

643ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 02:27:35 shown	643ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 05:17:26	1126ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 08:06:04	908ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:42:36	65535ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:11:10	554ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:06:31	1829ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:01:36	1773ms	2 NS 1 A 1 MX	🔒 Secure