co3.dk

📜 Historical scan 2026-06-16 21:35:46  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

co3.dk is a .dk domain served by 6 nameservers (ns10.digicertdns.com, ns11.digicertdns.com, ns12.digicertdns.com and 3 more). It was registered on 2 December 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 199.60.103.155 is hosted by Cloudflare London, LLC (AS209242) in United States. Mail is handled by co3-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#

6 records   32ms
NameserverIP addressesPTRASN / ISP
ns10.digicertdns.com — — —
ns11.digicertdns.com — — —
ns12.digicertdns.com — — —
ns13.digicertdns.net — — —
ns14.digicertdns.net — — —
ns15.digicertdns.net — — —

🌍 A Records#

1 records   49ms
IPTTLPTRASNISP / OrgCIDRCountryCity
199.60.103.155 — — AS209242 Cloudflare London, LLC 199.60.103.0/24 🇺🇸 United States —

📧 MX Records#

1 records   30ms
PriorityTTLMail ServerIP addressesPTRASN
0 — co3-dk.mail.protection.outlook.com 52.101.68.16
52.101.68.8
52.101.73.16
52.101.73.19		 mail-db4pr02cu00400.inbound.protection.outlook.com
mail-du0pr03cu00100.inbound.protection.outlook.com
mail-as2pr05cu00100.inbound.protection.outlook.com
mail-as8pr04cu00803.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

9 records   114ms
TXT Record
_globalsign-domain-verification=yTJ6XxRRO38i6qTJB812_bo6TExUf9HX7-a1I345uf
atlassian-domain-verification=JZVFvOHASSzV7Ia6LeXxP2pNDv3LChBMPrZR07WD3JMityq4a5rWFKrI2CI7ajfl
google-site-verification=1-uNiTsTCzJUBGBwM_MtB5q-nDFN-1KVfBJa5BOWWKM
google-site-verification=llnONK-z-W0mjjiANO0qD5CJgRJaiWXrOWF8wVOV98c
google-site-verification=ZABA64OcH70Dlyf2kcpyaP3G67xrUwbgdO1lb5sjbAQ
hubspot-developer-verification=MjMyZTVhYjEtNTdlYi00MTY3LWJmYzEtMGZmOGM4M2VkMTkx
MS=ms91430389
v=spf1 include:_spf.google.com include:_spf.wehost.dk include:mail.zendesk.com include:spf.protection.outlook.com include:acemdns.com include:app.sgizmo.com include:26250954.spf06.hubspotemail.net ip4:72.35.23.0/24 ip4:72.35.12.0/24 ip4:192.162.216.0/22 ip4:208.70.128.0/21 ip4:185.38.180.0/22 ip4:89.104.206.0/23 ip4:68.71.200.64/27 ip6:2a01:77c0:1180::/46 ip6:2a01:77c0:6::/47 ip6:2001:978:2a01::/48 ip6:2001:978:2a02::/48 ip4:79.136.102.64/26 ip4:94.136.64.224/27 ip4:83.140.31.128/26 ip4:213.136.34.128/26 ip4:91.236.209.128/26 ip4:185.37.140.0/26 ip6:2001:16d8:c001:2073::/64 ip6:2001:9b0:1:704::/64 ip4:185.51.78.140/30 ip4:185.99.120.0/22 ip4:185.150.198.82/31 ip4:185.163.188.0/22 ip4:194.9.86.0/23 ip6:2001:67c:27e0:2212::/64 ip6:2a04:7180:0:2400::/64 -all
WB=qWRDFldFJk2MLiXn0OCMlA

✉️ SPF#

PolicyRecord (co3.dk)
-all (hard fail) v=spf1 include:_spf.google.com include:_spf.wehost.dk include:mail.zendesk.com include:spf.protection.outlook.com include:acemdns.com include:app.sgizmo.com include:26250954.spf06.hubspotemail.net ip4:72.35.23.0/24 ip4:72.35.12.0/24 ip4:192.162.216.0/22 ip4:208.70.128.0/21 ip4:185.38.180.0/22 ip4:89.104.206.0/23 ip4:68.71.200.64/27 ip6:2a01:77c0:1180::/46 ip6:2a01:77c0:6::/47 ip6:2001:978:2a01::/48 ip6:2001:978:2a02::/48 ip4:79.136.102.64/26 ip4:94.136.64.224/27 ip4:83.140.31.128/26 ip4:213.136.34.128/26 ip4:91.236.209.128/26 ip4:185.37.140.0/26 ip6:2001:16d8:c001:2073::/64 ip6:2001:9b0:1:704::/64 ip4:185.51.78.140/30 ip4:185.99.120.0/22 ip4:185.150.198.82/31 ip4:185.163.188.0/22 ip4:194.9.86.0/23 ip6:2001:67c:27e0:2212::/64 ip6:2a04:7180:0:2400::/64 -all

📨 DMARC#

PolicyRecord (_dmarc.co3.dk)
p=quarantine v=DMARC1; p=quarantine; adkim=r; aspf=r

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

4 records   32ms
FlagsTagValue
0 iodef mailto:admins@co3.dk
0 issue digicert.com
0 issue globalsign.com
0 issue letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 07:56:44
www CNAME26250954.sites.hscoscdn-eu1.net (all on hscoscdn-eu1.net)
www vs bare domainDifferent networks (all like this)
WildcardNo

✍️ DKIM keys#

2 found
SelectorCNAMEKey
k1 dkim.mcsv.net RSA · ~1024 bit below 2048 bit
selector2 selector2-co3-dk._domainkey.co3as.onmicrosoft.com RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 7/10 · policy: -all

  • info Record is 766 bytes: long SPF records risk UDP truncation

🔗 TLSA / DANE#

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

🔐 DNSSEC#

115ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

31ms
FieldValue
Serial2009010161
Primary NS (MNAME)ns10.digicertdns.com
Responsible (RNAME)dns@digicertdns.com
Refresh43200s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)180s

📋 Registration#

WHOIS fetched 2026-10-11 07:51:38
FieldValue
RegistrarInterNetX GmbH
Registered1999-12-02
Expires2026-12-31 (74d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
32ms
A
49ms
MX
30ms
AAAA
30ms
TXT
114ms
CAA
32ms
HTTPS
31ms
TLSA
295ms
SOA
31ms
MTA-STS
35ms
DNSSEC
115ms
SRV
0ms
Total
852ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-16 07:56:44 3926ms 6 NS 1 A 1 MX 🔓 Insecure
2026-09-30 14:44:45 1297ms 6 NS 1 A 1 MX 🔓 Insecure
2026-09-14 15:18:02 11997ms 6 NS 1 A 1 MX 🔓 Insecure
2026-08-25 13:32:16 10026ms 6 NS 1 A 1 MX 🔓 Insecure
2026-06-21 08:35:51 1088ms 6 NS 1 A 1 MX 🔓 Insecure
2026-06-16 21:35:46 shown 852ms 6 NS 1 A 1 MX 🔓 Insecure
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