co2improve.dk

📜 Historical scan 2026-06-20 03:44:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

co2improve.dk is a .dk domain served by 3 nameservers (ns1.sqr.nl, ns2.sqr.domains, ns3.sqr.cloud). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.46.140.9 is hosted by Cyso Group B.V. (AS25151) in The Netherlands. Mail is handled by mx1.antispam-login.net, mx2.antispam-login.net. The zone is not DNSSEC-signed, publishes a 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#

3 records 74ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.sqr.nl	109.235.73.236 2a01:518:ffff:4020::53:3	ns1.dns.sqr.cyso.net ns1.dns.sqr.cyso.net	AS25151 Cyso Group B.V. AS25151 Cyso Group B.V.
ns2.sqr.domains	2a01:518:ffff:4020::53:4 93.94.227.166	ns2.dns.sqr.cyso.net ns2.dns.sqr.cyso.net	AS25151 Cyso Group B.V. AS25151 Cyso Group B.V.
ns3.sqr.cloud	2a03:6000:1002:1002::54 46.23.87.195	ns3.sqr.cloud ns3.sqr.cloud	AS60131 High5! B.V. AS60131 High5! B.V.

🌍 A Records#

1 records 89ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
37.46.140.9	3600s	web103.shared.hosting-login.net	AS25151	Cyso Group B.V.	37.46.136.0/21	🇳🇱 The Netherlands	—

📧 MX Records#

2 records 101ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.antispam-login.net	2a01:518:1:42:8::132 2a01:518:1:42:8::133 93.94.228.132 93.94.228.133	filter1.antispam-login.net filter2.antispam-login.net filter1.antispam-login.net filter2.antispam-login.net	AS25151 Cyso Group B.V. AS25151 Cyso Group B.V. AS25151 Cyso Group B.V. AS25151 Cyso Group B.V.
20	3600s	mx2.antispam-login.net	2a01:518:1:42:8::132 2a01:518:1:42:8::133 93.94.228.132 93.94.228.133	filter1.antispam-login.net filter2.antispam-login.net filter1.antispam-login.net filter2.antispam-login.net	AS25151 Cyso Group B.V. AS25151 Cyso Group B.V. AS25151 Cyso Group B.V. AS25151 Cyso Group B.V.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	co2improve.dk → 37.46.140.9
🔶 Autoconfig	co2improve.dk → 37.46.140.9

🔷 AAAA Records (IPv6)#

1 records 89ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:518:1:1041::9	3600s	web103.shared.hosting-login.net	AS25151	Cyso Group B.V.	2a01:518:0:0:0:0:0:0/32	🇳🇱 The Netherlands	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 356ms

TXT Record
v=spf1 include:spf.sqr.nl -all

✉️ SPF#

Policy	Record (co2improve.dk)
-all (hard fail)	v=spf1 include:spf.sqr.nl -all

📨 DMARC#

Policy	Record (_dmarc.co2improve.dk)
p=reject	v=DMARC1; p=reject;

📬 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 2026-10-11 00:57:37

www CNAME	co2improve.dk (all on co2improve.dk) → 37.46.140.9 2a01:518:1:1041::9 (AS25151)
www vs bare domain	Same network co2improve.dk: 37.46.140.9 2a01:518:1:1041::9 (AS25151) www.co2improve.dk: 37.46.140.9 2a01:518:1:1041::9 (AS25151)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.co2improve.dk	co2improve.dk

🔗 TLSA / DANE#

2 records 439ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.antispam-login.net	DANE-EE · SPKI · SHA-256	1FDB1C74A3A6D6C5990A38291982DC61…
SMTP _25._tcp.mx2.antispam-login.net	DANE-EE · SPKI · SHA-256	1FDB1C74A3A6D6C5990A38291982DC61…

🔐 DNSSEC#

220ms

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

🏷️ SOA#

46ms

Field	Value
Serial	2026040701
Primary NS (MNAME)	ns1.sqr.nl
Responsible (RNAME)	hostmaster@co2improve.dk
Refresh	3600s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

74ms

89ms

101ms

AAAA

89ms

TXT

356ms

CAA

87ms

HTTPS

98ms

TLSA

439ms

SOA

46ms

MTA-STS

112ms

DNSSEC

220ms

SRV

174ms

Total

1356ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-06-28 03:49:37	1429ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-27 12:45:14	1319ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-20 03:44:35 shown	1356ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-16 21:48:41	65535ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-16 21:40:04	2105ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-16 21:30:47	772ms	3 NS 1 A 2 MX	🔓 Insecure