protoncenter.dk

📜 Historical scan 2026-06-23 07:41:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

protoncenter.dk is a .dk domain served by 3 nameservers (ns1.websupport.cz, ns2.websupport.cz, ns3.websupport.eu). It was registered on 10 August 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.9.175.163 is hosted by WebSupport s.r.o. (AS51013) in Slovakia. Mail is handled by mailin1.protoncenter.dk, mailin2.protoncenter.dk. 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#

3 records 84ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.websupport.cz	2a10:bbc0::11 45.10.97.11	ns1.websupport.eu ns1.websupport.eu	AS25234 ACTIVE 24, s.r.o. AS25234 ACTIVE 24, s.r.o.
ns2.websupport.cz	185.71.159.12 2a02:250:3::12	ns2.websupport.eu ns2.websupport.eu	AS25234 ACTIVE 24, s.r.o. AS25234 ACTIVE 24, s.r.o.
ns3.websupport.eu	2a10:bbc0::13 45.10.97.13	ns3.websupport.eu ns3.websupport.eu	AS25234 ACTIVE 24, s.r.o. AS25234 ACTIVE 24, s.r.o.

🌍 A Records#

1 records 55ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
37.9.175.163	3600s	ing.r3.websupport.sk	AS51013	WebSupport s.r.o.	37.9.168.0/21	🇸🇰 Slovakia	—

📧 MX Records#

2 records 183ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mailin1.protoncenter.dk	2a00:4b40:aaaa:2101:45:13:137:109 45.13.137.114	mx20.websupport.sk m1-u7-mx.websupport.hu	AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o.
100	600s	mailin2.protoncenter.dk	2a00:4b40:aaaa:2101:45:13:137:113 45.13.137.112	mx10.websupport.hu m1-u5-mx.websupport.hu	AS51013 WebSupport s.r.o. AS51013 WebSupport s.r.o.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	37.9.175.163
🔶 Autoconfig	37.9.175.163

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 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 2026-10-09 06:17:35

www	37.9.175.163 (AS51013) (address records, no CNAME)
www vs bare domain	Same network protoncenter.dk: 37.9.175.163 (AS51013) www.protoncenter.dk: 37.9.175.163 (AS51013)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 0 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

131ms

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

🏷️ SOA#

77ms

Field	Value
Serial	1780517600
Primary NS (MNAME)	ns1.websupport.cz
Responsible (RNAME)	admin@websupport.cz
Refresh	7200s
Retry	2048s
Expire	1048576s
Minimum (neg-cache TTL)	2560s

📋 Registration#

WHOIS fetched 2026-10-01 04:20:39

Field	Value
Registrar	ASCIO TECHNOLOGIES, CORP. DANMARK - FILIAL AF ASCIO TECHNOLOGIES, CORP. CANADA
Registered	2020-08-10
Expires	2027-08-31 (315d)

📋 WHOIS#

⏱️ Lookup Timing#

84ms

55ms

183ms

AAAA

166ms

TXT

301ms

CAA

171ms

HTTPS

59ms

TLSA

126ms

SOA

77ms

MTA-STS

91ms

DNSSEC

131ms

SRV

188ms

Total

995ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 04:06:24	10689ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-28 03:16:26	5810ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-01 08:29:04	3983ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-26 23:33:05	964ms	3 NS 1 A 2 MX	🔒 Secure
2026-08-06 09:14:32	1249ms	3 NS 1 A 2 MX	🔒 Secure
2026-07-01 13:26:49	1078ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-23 07:41:07 shown	995ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-18 05:44:14	3432ms	3 NS 1 A 2 MX	🔓 Insecure