krebs-co.dk

Records from scan: 2026-09-26 09:16:46 · 839ms total · last checked 2026-10-17 02:01 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

krebs-co.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.28 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by krebsco-dk01c.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.28	600s	vm1413.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 29ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	krebsco-dk01c.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca3c::6 2a01:111:f403:ca48::a 2a01:111:f403:ca48::c 52.101.103.162 52.101.209.28 52.101.73.126 52.101.91.153	mail-db7pr03cu00601.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr04cu00101.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 → 40.104.116.24
🔶 Autoconfig	185.21.40.28

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 176ms

TXT Record
google-site-verification=gKFScxpZGjNcui1Qsvn97cLU6oPwLbuoOBfE9cBLDEU
v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:web.shared.mysmtp.com -all

✉️ SPF#

Policy	Record (krebs-co.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:web.shared.mysmtp.com -all

📨 DMARC#

Policy	Record (_dmarc.krebs-co.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:hop3z5ei@ag.eu.dmarcian.com;

📬 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#

checked 2026-10-08 11:37:36

www	185.21.40.28 (AS48854) (address records, no CNAME)
www vs bare domain	Same network krebs-co.dk: 185.21.40.28 (AS48854) www.krebs-co.dk: 185.21.40.28 (AS48854)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-krebsco-dk01c._domainkey.krebsco.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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

74ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026082801
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

33ms

29ms

AAAA

35ms

TXT

176ms

CAA

47ms

HTTPS

40ms

TLSA

310ms

SOA

0ms

MTA-STS

46ms

DNSSEC

74ms

SRV

66ms

Total

839ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 09:16:46 shown	839ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-10 15:43:42	884ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 14:06:26	2400ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-19 09:21:41	1297ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-17 09:45:14	5391ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 02:25:45	2033ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 14:20:36	3140ms	2 NS 1 A 1 MX	🔒 Secure