derch.dk

📜 Historical scan 2026-08-08 20:31:49 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

derch.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 12 January 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.123 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by derch-dk.mail.protection.outlook.com. 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#

2 records 71ms

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 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.123	3600s	webcluster2.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	derch-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::5 2a01:111:f403:ca09::d 2a01:111:f403:ca09::f 52.101.68.16 52.101.68.5 52.101.73.19 52.101.73.22	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00106.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

🔷 AAAA Records (IPv6)#

1 records 42ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:111:80dd:4f9:11b8:9532	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#

3 records 263ms

TXT Record
MS=ms33399296
P-MW9eyVLXXR
v=spf1 include:spf.protection.outlook.com include:spf.permido.com ~all

✉️ SPF#

Policy	Record (derch.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:spf.permido.com ~all

📨 DMARC#

Policy	Record (_dmarc.derch.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 19:29:16

www	46.30.215.123 2a02:2350:5:111:80dd:4f9:11b8:9532 (AS51468) (address records, no CNAME)
www vs bare domain	Same network derch.dk: 46.30.215.123 2a02:2350:5:111:80dd:4f9:11b8:9532 (AS51468) www.derch.dk: 46.30.215.123 2a02:2350:5:111:80dd:4f9:11b8:9532 (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-derch-dk._domainkey.derchdk.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-derch-dk._domainkey.derchdk.onmicrosoft.com	RSA · ~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: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

159ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026080705
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 2026-10-17 20:05:13

Field	Value
Registrar	ONE.COM A/S
Registered	2024-01-12
Expires	2027-01-11 (85d)

📋 WHOIS#

⏱️ Lookup Timing#

71ms

56ms

44ms

AAAA

42ms

TXT

263ms

CAA

49ms

HTTPS

69ms

TLSA

764ms

SOA

0ms

MTA-STS

96ms

DNSSEC

159ms

SRV

141ms

Total

1833ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 19:29:16	1331ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-07 00:41:38	1179ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-03 16:16:45	895ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-10 01:14:25	814ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-08 20:31:49 shown	1833ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-27 23:34:52	1181ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-17 01:33:59	5475ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-28 20:38:41	1142ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-28 12:20:13	940ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-21 13:50:54	915ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 02:05:53	549ms	2 NS 1 A 1 MX	🔓 Insecure