byruby.dk

📜 Historical scan 2026-09-26 00:05:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

byruby.dk is a .dk domain served by 2 nameservers (ns1.concrete5danmark.dk, ns2.concrete5danmark.dk). It was registered on 5 February 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 138.201.255.81 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by byruby.dk. The zone is not DNSSEC-signed, has no 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 68ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.concrete5danmark.dk	88.99.120.238	ns1.dnshotel.dk	AS24940 Hetzner Online GmbH
ns2.concrete5danmark.dk	94.130.170.39	ns2.dnshotel.dk	AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
138.201.255.81	360s	server.concrete5danmark.dk	AS24940	Hetzner Online GmbH	138.201.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records#

1 records 67ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	360s	byruby.dk	138.201.255.81 2a01:4f8:173:2652::1	server.concrete5danmark.dk server.concrete5danmark.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🔷 AAAA Records (IPv6)#

1 records 53ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:173:2652::1	3600s	server.concrete5danmark.dk	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 322ms

TXT Record
v=spf1 ip4:138.201.255.81 include:spf.azehosting.net +a +mx +ip4:138.201.130.182 +include:relay.mailchannels.net ~all

✉️ SPF#

Policy	Record (byruby.dk)
~all (soft fail)	v=spf1 ip4:138.201.255.81 include:spf.azehosting.net +a +mx +ip4:138.201.130.182 +include:relay.mailchannels.net ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-13 17:53:54

www CNAME	byruby.dk (all on byruby.dk) → 138.201.255.81 2a01:4f8:173:2652::1 (AS24940)
www vs bare domain	Same network byruby.dk: 138.201.255.81 2a01:4f8:173:2652::1 (AS24940) www.byruby.dk: 138.201.255.81 2a01:4f8:173:2652::1 (AS24940)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 5/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.byruby.dk	Ew8p3GscGrjg_ftHHACKycCA2mA1NhSq0V8HtuBB5UI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

91ms

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

🏷️ SOA#

36ms

Field	Value
Serial	2026081303
Primary NS (MNAME)	ns1.concrete5danmark.dk
Responsible (RNAME)	server-admin@azehosting.net
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-08 14:43:23

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-02-05
Expires	2027-02-28 (133d)

📋 WHOIS#

⏱️ Lookup Timing#

68ms

51ms

67ms

AAAA

53ms

TXT

322ms

CAA

50ms

HTTPS

51ms

TLSA

219ms

SOA

36ms

MTA-STS

82ms

DNSSEC

91ms

SRV

79ms

Total

12283ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 17:53:54	588ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-26 00:05:34 shown	12283ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 13:13:03	6738ms	2 NS 1 A 0 MX	🔓 Insecure
2026-08-13 19:36:29	4578ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-29 05:48:46	9842ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-28 03:18:17	818ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-26 02:27:28	6581ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-25 02:11:24	883ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-24 02:04:11	16726ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-21 09:52:01	901ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-19 14:47:20	830ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-18 12:40:13	847ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-16 02:22:50	10022ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-14 21:12:05	979ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-06 01:25:02	7173ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-26 16:34:07	1090ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-20 07:52:49	648ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-19 09:30:10	827ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 18:25:58	687ms	2 NS 1 A 1 MX	🔓 Insecure