co2iso.dk

📜 Historical scan 2026-08-13 11:36:47 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

co2iso.dk is a .dk domain served by 5 nameservers (ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk and 2 more). It was registered on 6 October 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.183.138.100 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by co2iso-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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#

5 records 336ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	46.183.139.31	ns1.gigahost.dk	AS47292 Sentia Denmark A/S
ns2.gigahost.dk	46.183.139.222	web22.gigahost.dk	AS47292 Sentia Denmark A/S
ns3.gigahost.dk	71.19.249.71	ns3.gigahost.dk	AS11831 eSecureData
ns4.gigahost.dk	51.79.215.130	ns4.gigahost.dk	AS16276 OVH SAS
ns5.gigahost.dk	77.74.192.83	ns5.gigahost.dk	AS42831 UK Dedicated Servers Limited

🌍 A Records#

1 records 381ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	3600s	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 379ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	co2iso-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::7 2a01:111:f403:ca04::b 2a01:111:f403:ca09::1 52.101.73.12 52.101.73.15 52.101.73.28 52.101.73.6	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.40
🔶 Autoconfig	co2iso.dk → 46.183.138.100

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 323ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	autodiscover.gigahost.dk

📝 TXT Records#

2 records 588ms

TXT Record
MS=ms38522819
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (co2iso.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.co2iso.dk)
p=reject	v=DMARC1; p=reject;
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@co2iso.dk; fo=1;

📬 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 2026-10-17 16:57:32

www CNAME	co2iso.dk (all on co2iso.dk) → 46.183.138.100 (AS47292)
www vs bare domain	Same network co2iso.dk: 46.183.138.100 (AS47292) www.co2iso.dk: 46.183.138.100 (AS47292)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.co2iso.dk	co2iso.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

542ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026081301
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@co2iso.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-17 17:29:03

Field	Value
Registrar	GIGAHOST ApS
Registered	2025-10-06
Expires	2028-10-05 (714d)

🔗 Same registrant#

8 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).

Domain	Registrar
cbbweb.dk	Punktum dk A/S (direct)
cblayout.dk	Punktum dk A/S (direct)
jernstangen.dk	Punktum dk A/S (direct)
krol.dk	Punktum dk A/S (direct)
kronborg-it.dk	Punktum dk A/S (direct)
kronborgit.dk	Punktum dk A/S (direct)
oco2.dk	Punktum dk A/S (direct)
tingogsager.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

336ms

381ms

379ms

AAAA

260ms

TXT

588ms

CAA

339ms

HTTPS

239ms

TLSA

409ms

SOA

0ms

MTA-STS

284ms

DNSSEC

542ms

SRV

323ms

Total

4893ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 16:57:32	1528ms	5 NS 1 A 1 MX	🔓 Insecure
2026-10-15 16:10:24	2317ms	5 NS 1 A 1 MX	🔓 Insecure
2026-10-08 08:46:46	1485ms	5 NS 1 A 1 MX	🔓 Insecure
2026-10-01 06:09:22	1005ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-24 18:14:41	1669ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-17 21:24:40	1540ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-10 19:16:13	1866ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-03 16:30:54	1489ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-27 05:27:58	1014ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-20 09:46:21	1882ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-13 11:36:47 shown	4893ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-07 07:11:34	2488ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-03 05:50:32	2731ms	5 NS 1 A 1 MX	❓ Unknown
2026-07-23 12:47:40	2445ms	5 NS 1 A 1 MX	🔓 Insecure
2026-07-17 02:31:00	3545ms	5 NS 1 A 1 MX	🔓 Insecure
2026-07-10 00:29:03	1857ms	5 NS 1 A 1 MX	🔓 Insecure
2026-07-03 20:07:33	2057ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-28 01:50:33	1139ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-23 16:45:05	1096ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-20 18:40:33	2166ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:50:50	65535ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:35:33	721ms	5 NS 1 A 1 MX	🔓 Insecure