1600challenge.dk

📜 Historical scan 2026-06-25 00:13:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

1600challenge.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 March 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.137 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.mailpod15-cph3.g1i.one.com, mx2.mailpod15-cph3.g1i.one.com and 2 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 33ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.137	3600s	webcluster1.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

4 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.mailpod15-cph3.g1i.one.com	104.37.35.36	mx1.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx2.mailpod15-cph3.g1i.one.com	104.37.35.37	mx2.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx3.mailpod15-cph3.g1i.one.com	104.37.35.38	mx3.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx4.mailpod15-cph3.g1i.one.com	104.37.35.39	mx4.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	46.30.213.137
🔶 Autoconfig	46.30.213.137

🔷 AAAA Records (IPv6)#

1 records 58ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:4a:f8a7:26f3:d14d	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 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 2026-10-16 03:27:00

www	46.30.213.137 2a02:2350:5:10c:4a:f8a7:26f3:d14d (AS51468) (address records, no CNAME)
www vs bare domain	Same network 1600challenge.dk: 46.30.213.137 2a02:2350:5:10c:4a:f8a7:26f3:d14d (AS51468) www.1600challenge.dk: 46.30.213.137 2a02:2350:5:10c:4a:f8a7:26f3:d14d (AS51468)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

4 records 71ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx2.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx3.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx4.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…

🔐 DNSSEC#

103ms

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

🏷️ SOA#

43ms

Field	Value
Serial	2026061702
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-16 03:44:26

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-03-17
Expires	2027-03-31 (165d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

33ms

48ms

42ms

AAAA

58ms

TXT

165ms

CAA

34ms

HTTPS

40ms

TLSA

71ms

SOA

43ms

MTA-STS

49ms

DNSSEC

103ms

SRV

67ms

Total

717ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 03:27:00	802ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-30 12:30:35	624ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-21 02:02:54	722ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-22 19:30:04	5328ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-17 02:09:08	17132ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-25 00:13:46 shown	717ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-24 12:11:07	1176ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 18:56:38	721ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-18 22:27:43	1671ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-16 12:49:08	1710ms	2 NS 1 A 4 MX	🔒 Secure