fibercity.dk - robtex.com

fibercity.dk

DNSSEC⚠️ Not signed
A193.104.135.126🇩🇰 FIBERBY193.104.135.0/24 Fiberby
PTRweb1.fiberby.net
NSauthns1.fiberby.net ⭐
A2a03:5440:0:102::53🇩🇰 FIBERBY2a03:5440::/29 Fiberby IPv6
PTRauthns1.fiberby.net
A193.104.135.46🇩🇰 FIBERBY193.104.135.0/24 Fiberby
PTRauthns1.fiberby.net
NSauthns2.fiberby.net
A2a03:5440:0:202::53🇩🇰 FIBERBY2a03:5440::/29 Fiberby IPv6
PTRauthns2.fiberby.net
A193.104.135.50🇩🇰 FIBERBY193.104.135.0/24 Fiberby
PTRauthns2.fiberby.net
NSauthns3.fiberby.net
A2a03:5440:0:302::53🇩🇰 FIBERBY2a03:5440::/29 Fiberby IPv6
PTRauthns3.fiberby.net
A193.104.135.54🇩🇰 FIBERBY193.104.135.0/24 Fiberby
PTRauthns3.fiberby.net
NSauthns4.fiberby.net
A2001:1af8:4700:a134:23::53🇳🇱 LEASEWEB-NL-AMS-012001:1af8::/32 NL-LEASEWEB-20040408 Leaseweb
PTRauthns4.fiberby.net
A5.79.113.128🇳🇱 LEASEWEB-NL-AMS-015.79.64.0/18 LEASEWEB
PTRauthns4.fiberby.net
MXmail.fiberby.dk ⭐
SOAauthns1.fiberby.nethostmaster@fiberby.net 2020-01-30 #0

dk

DNSSEC🔒 Signed (DS record present)
NSb.nic.dk ⭐
NSc.nic.dk
NSh.nic.dk
NSl.nic.dk
NSs.nic.dk
NSt.nic.dk
TXTDK zone updateEpoch 1774665541localtime Sat Mar 28 03:39:01 2026gmtime Sat Ma...
SOAb.nic.dktech@punktum.dk serial=1774665541

Subdomains

mail.fibercity.dk

Same first word

fibercity.us
fibercity.net.br
fibercity.dk
fibercity.co.uk
fibercity.at
fibercity.ru
fibercity.com.ph
fibercity.net

Similar names

fibrecity.co.uk
citybrief.com
byterific.com
cityfiber.com
cityfiber.org
cityfiber.com.br
citybrief.de
fibrecity.org
cityfibre.cloud
cityfibre.com.ng
fibrecity.eu
cityfibre.net
cityfiber.eu
cityfibre.com
fibrecity.net

DNS History

17 records (6 active, 11 former)

20162017201820192020202120222023202420252026NSauthns1.fiberby.netauthns2.fiberby.netauthns3.fiberby.netauthns4.fiberby.netauthns1.fiberby.dkauthns2.fiberby.dkauthns3.fiberby.dkns1.gratisdns.dkns2.gratisdns.dkns3.gratisdns.dkns4.gratisdns.dkns5.gratisdns.dkMXmail.fiberby.dkmail.fibercity.dkA193.104.135.126193.104.135.2072a03:5440:1010::80
○NSauthns1.fiberby.dk2015-11-13 → 2017-04-05 · 5 obs
○ 2015-07-13 04:59:26
● 2015-11-13 22:17:14
● 2017-04-05 03:58:32
○ 2026-03-10 08:03:32
○ 2026-03-28 03:01:28
●NSauthns1.fiberby.net2026-03-10 → 2026-03-28 · 3 obs
○ 2017-04-05 03:58:32
● 2026-03-10 08:03:32
● 2026-03-28 03:01:28
○NSauthns2.fiberby.dk2015-11-13 → 2017-04-05 · 5 obs
○ 2015-07-13 04:59:26
● 2015-11-13 22:17:14
● 2017-04-05 03:58:32
○ 2026-03-10 08:03:32
○ 2026-03-28 03:01:28
●NSauthns2.fiberby.net2026-03-10 → 2026-03-28 · 3 obs
○ 2017-04-05 03:58:32
● 2026-03-10 08:03:32
● 2026-03-28 03:01:28
○NSauthns3.fiberby.dk2015-11-13 → 2017-04-05 · 5 obs
○ 2015-07-13 04:59:26
● 2015-11-13 22:17:14
● 2017-04-05 03:58:32
○ 2026-03-10 08:03:32
○ 2026-03-28 03:01:28
●NSauthns3.fiberby.net2026-03-10 → 2026-03-28 · 3 obs
○ 2017-04-05 03:58:32
● 2026-03-10 08:03:32
● 2026-03-28 03:01:28
●NSauthns4.fiberby.net2026-03-10 → 2026-03-28 · 3 obs
○ 2017-04-05 03:58:32
● 2026-03-10 08:03:32
● 2026-03-28 03:01:28
○NSns1.gratisdns.dk2015-07-13 → 2015-07-13 · 3 obs
● 2015-07-13 04:59:26
○ 2015-11-13 22:17:14
○ 2026-03-28 03:01:28
○NSns2.gratisdns.dk2015-07-13 → 2015-07-13 · 3 obs
● 2015-07-13 04:59:26
○ 2015-11-13 22:17:14
○ 2026-03-28 03:01:28
○NSns3.gratisdns.dk2015-07-13 → 2015-07-13 · 3 obs
● 2015-07-13 04:59:26
○ 2015-11-13 22:17:14
○ 2026-03-28 03:01:28
○NSns4.gratisdns.dk2015-07-13 → 2015-07-13 · 3 obs
● 2015-07-13 04:59:26
○ 2015-11-13 22:17:14
○ 2026-03-28 03:01:28
○NSns5.gratisdns.dk2015-07-13 → 2015-07-13 · 3 obs
● 2015-07-13 04:59:26
○ 2015-11-13 22:17:14
○ 2026-03-28 03:01:28
●MXmail.fiberby.dk2015-11-13 → 2026-03-28 · 3 obs
○ 2015-07-13 04:59:26
● 2015-11-13 22:17:14
● 2026-03-28 03:01:28
○MXmail.fibercity.dk2015-07-13 → 2015-07-13 · 3 obs
● 2015-07-13 04:59:26
○ 2015-11-13 22:17:14
○ 2026-03-28 03:01:28
●A193.104.135.1262016-02-22 → 2026-03-28 · 3 obs
○ 2015-11-13 22:17:14
● 2016-02-22 22:30:12
● 2026-03-28 03:01:28
○A193.104.135.2072015-07-13 → 2015-11-13 · 4 obs
● 2015-07-13 04:59:26
● 2015-11-13 22:17:14
○ 2016-02-22 22:30:12
○ 2026-03-28 03:01:28
○A2a03:5440:1010::802015-11-13 → 2015-11-13 · 4 obs
○ 2015-07-13 04:59:26
● 2015-11-13 22:17:14
○ 2016-02-22 22:30:12
○ 2026-03-28 03:01:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dkb.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...-
fibercity.dkauthns1.fiberby.net, authns2.fiberby.net, authns3.fiberby.net, authns4.fiberby.net-

✅ Authoritative Response

Server:193.104.135.46

NS records: authns1.fiberby.net, authns2.fiberby.net, authns3.fiberby.net, authns4.fiberby.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fibercity.dk (unsigned zone)

⏱️ Timing

Total: 1131ms | Queries: -

📄 Records

TypeCountSample Data
A1193.104.135.126
NS4authns4.fiberby.net, authns3.fiberby.net...
MX1mail.fiberby.dk (pri: 10)
SOA1authns1.fiberby.net hostmaster.fiberby.n

Analysis

Hierarchy

The parent of mail.fibercity.dk is fibercity.dk.

IP Addresses

fibercity.dk points to IP number: 193.104.135.126.

Other host names such as web1.fiberby.net, metrofiber.dk and byfiber.dk share IP numbers with fibercity.dk.

Name Servers

fibercity.dk is delegated to four name servers: authns1.fiberby.net, authns2.fiberby.net, authns3.fiberby.net and authns4.fiberby.net.

fibercity.dk at least partially shares name servers with other domains, for instance trafikgrafer.dk, 254.23.89.in-addr.arpa, byfiber.dk, 221.10.185.in-addr.arpa and 253.23.89.in-addr.arpa.

These name servers are commonly used together with ns1.fiberby.dk, ns2.fiberby.dk and ns3.fiberby.dk.

Host names with two IP numbers: authns1.fiberby.net points to 2a03:5440:0:102::53 and 193.104.135.46; authns2.fiberby.net points to 2a03:5440:0:202::53 and 193.104.135.50; authns3.fiberby.net points to 2a03:5440:0:302::53 and 193.104.135.54; authns4.fiberby.net points to 2001:1af8:4700:a134:23::53 and 5.79.113.128.

Mail Servers

fibercity.dk is handled by a single mail server, mail.fiberby.dk.

fibercity.dk shares the mail server setup with other domains, for example metrofiber.dk and byfiber.dk.