byfiber.dk

📜 Historical scan 2026-07-02 00:07:14  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

byfiber.dk is a .dk domain served by 4 nameservers (authns1.fiberby.net, authns2.fiberby.net, authns3.fiberby.net and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.104.135.126 is hosted by Fiberby ApS (AS42541) in Denmark. Mail is handled by mail.fiberby.dk. The zone is not DNSSEC-signed, has no 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#

4 records   235ms
NameserverIP addressesPTRASN / ISP
authns1.fiberby.net 193.104.135.46
2a03:5440:0:102::53		 authns1.fiberby.net
authns1.fiberby.net		 AS42541 Fiberby ApS
AS42541 Fiberby ApS
authns2.fiberby.net 193.104.135.50
2a03:5440:0:202::53		 authns2.fiberby.net
authns2.fiberby.net		 AS42541 Fiberby ApS
AS42541 Fiberby ApS
authns3.fiberby.net 193.104.135.54
2a03:5440:0:302::53		 authns3.fiberby.net
authns3.fiberby.net		 AS42541 Fiberby ApS
AS42541 Fiberby ApS
authns4.fiberby.net 2001:1af8:4700:a134:23::53
5.79.113.128		 authns4.fiberby.net
authns4.fiberby.net		 AS60781 LeaseWeb Netherlands B.V.
AS60781 LeaseWeb Netherlands B.V.

🌍 A Records#

1 records   238ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.104.135.126 900s web1.fiberby.net AS42541 Fiberby ApS 193.104.135.0/24 🇩🇰 Denmark —

📧 MX Records#

1 records   253ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s mail.fiberby.dk 193.106.165.197 193-106-165-197.ip4.fiberby.net AS42541 Fiberby ApS

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverbyfiber.dk → 193.104.135.126
🔶 Autoconfigbyfiber.dk → 193.104.135.126

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝
No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-10 03:20:00
www CNAMEbyfiber.dk (all on byfiber.dk)
www vs bare domainSame network
byfiber.dk: 193.104.135.126 (AS42541)
www.byfiber.dk: 193.104.135.126 (AS42541)
WildcardYes: any name under the zone resolves

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.byfiber.dk byfiber.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

374ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

249ms
FieldValue
Serial2026042400
Primary NS (MNAME)authns1.fiberby.net
Responsible (RNAME)hostmaster@fiberby.net
Refresh43200s
Retry1800s
Expire2419200s
Minimum (neg-cache TTL)3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup
📋 WHOIS#

⏱️ Lookup Timing#

NS
235ms
A
238ms
MX
253ms
AAAA
230ms
TXT
487ms
CAA
227ms
HTTPS
235ms
TLSA
229ms
SOA
249ms
MTA-STS
284ms
DNSSEC
374ms
SRV
264ms
Total
3812ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-30 00:39:18 646ms 4 NS 1 A 1 MX 🔓 Insecure
2026-08-26 10:30:17 962ms 4 NS 1 A 1 MX 🔓 Insecure
2026-07-02 00:07:14 shown 3812ms 4 NS 1 A 1 MX 🔓 Insecure
2026-06-16 18:10:33 2534ms 4 NS 1 A 1 MX 🔓 Insecure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone