byco.dk - dns.ninja

byco.dk

DNSSEC🔒 Signed (DS record present)
A5.103.46.102🇩🇰 FIBIA-P-S5.103.0.0/16 SEAS-NVE IPv4 Network
PTRserver6102.serverpark.dk
NSns4.dns-123.net ⭐
A35.198.132.83🇩🇪 Google35.198.128.0/20
PTR83.132.198.35.bc.googleusercontent.com
NSns5.dns-123.net
A35.187.184.173🇧🇪 Google35.187.176.0/20
PTR173.184.187.35.bc.googleusercontent.com
NSns6.dns-123.net
A35.228.54.1🇫🇮 Google35.228.48.0/20
PTR1.54.228.35.bc.googleusercontent.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c21::1b🇺🇸 Google2607:f8b0:4004::/48
PTRpe-in-f27.1e100.net
A142.251.163.27🇺🇸 Google142.251.163.0/24
PTRwv-in-f27.1e100.net
MXalt1.aspmx.l.google.com(20)
A2800:3f0:4003:c14::1b🇨🇱 Google2800:3f0:4003::/48
A192.178.234.27🇺🇸 Google192.178.0.0/15
PTRncsclj-in-f27.1e100.net
MXalt2.aspmx.l.google.com(20)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXaspmx2.googlemail.com(30)
A2800:3f0:4003:c14::1b🇨🇱 Google2800:3f0:4003::/48
A192.178.234.26🇺🇸 Google192.178.0.0/15
PTRncsclj-in-f26.1e100.net
MXaspmx3.googlemail.com(30)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
MXaspmx4.googlemail.com(30)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.26🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f26.1e100.net
MXaspmx5.googlemail.com(30)
A2a00:1450:400c:c23::1a🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f26.1e100.net
A172.253.157.27🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f27.1e100.net
TXTv=spf1 a mx include:_spf.serverpark.dk ~all
SOAns4.dns-123.netadmin@dns-123.net serial=2012103313

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 1786724820localtime Fri Aug 14 18:27:00 2026gmtime Fri Au...
SOAb.nic.dktech@punktum.dk serial=1786724820

Same first word

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byco.myshopify.com
byco.no
byco.com.pk
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cboy.noip.me
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cybo.se
coby.world
coby.gr
ycob.hk
obcy.com
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obcy.net
coby.com.au
boyc.com
byoc.cn

DNS History

16 records (11 active, 5 former)

20162017201820192020202120222023202420252026NSns4.dns-123.netns5.dns-123.netns6.dns-123.netns1.dns-123.netns2.dns-123.netns3.dns-123.netMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA5.103.46.10286.48.37.7386.58.182.173
○NSns1.dns-123.net2015-06-23 → 2016-08-14 · 4 obs
● 2015-06-23 20:37:20
● 2016-08-14 23:07:02
○ 2026-03-27 18:41:34
○ 2026-08-14 16:31:18
○NSns2.dns-123.net2015-06-23 → 2016-08-14 · 4 obs
● 2015-06-23 20:37:20
● 2016-08-14 23:07:02
○ 2026-03-27 18:41:34
○ 2026-08-14 16:31:18
○NSns3.dns-123.net2015-06-23 → 2016-08-14 · 4 obs
● 2015-06-23 20:37:20
● 2016-08-14 23:07:02
○ 2026-03-27 18:41:34
○ 2026-08-14 16:31:18
●NSns4.dns-123.net2026-03-27 → 2026-08-14 · 3 obs
○ 2016-08-14 23:07:02
● 2026-03-27 18:41:34
● 2026-08-14 16:31:18
●NSns5.dns-123.net2026-03-27 → 2026-08-14 · 3 obs
○ 2016-08-14 23:07:02
● 2026-03-27 18:41:34
● 2026-08-14 16:31:18
●NSns6.dns-123.net2026-03-27 → 2026-08-14 · 3 obs
○ 2016-08-14 23:07:02
● 2026-03-27 18:41:34
● 2026-08-14 16:31:18
●MXalt1.aspmx.l.google.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●MXalt2.aspmx.l.google.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●MXaspmx.l.google.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●MXaspmx2.googlemail.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●MXaspmx3.googlemail.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●MXaspmx4.googlemail.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●MXaspmx5.googlemail.com2015-06-23 → 2026-08-14 · 2 obs
● 2015-06-23 20:37:20
● 2026-08-14 16:31:18
●A5.103.46.1022026-03-27 → 2026-08-14 · 3 obs
○ 2016-08-14 23:07:02
● 2026-03-27 18:41:34
● 2026-08-14 16:31:18
○A86.48.37.732015-11-27 → 2016-08-14 · 5 obs
○ 2015-06-23 20:37:20
● 2015-11-27 03:36:02
● 2016-08-14 23:07:02
○ 2026-03-27 18:41:34
○ 2026-08-14 16:31:18
○A86.58.182.1732015-06-23 → 2015-06-23 · 3 obs
● 2015-06-23 20:37:20
○ 2015-11-27 03:36:02
○ 2026-08-14 16:31:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dks.nic.dk, h.nic.dk, b.nic.dk, c.nic.dk...-
byco.dkns4.dns-123.net, ns5.dns-123.net, ns6.dns-123.net-

✅ Authoritative Response

Server:35.228.54.1

NS records: ns4.dns-123.net, ns5.dns-123.net, ns6.dns-123.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1332ms | Queries: -

📄 Records

TypeCountSample Data
A15.103.46.102
NS3ns6.dns-123.net, ns5.dns-123.net...
MX7ASPMX3.GOOGLEMAIL.COM (pri: 30), ALT1.ASPMX.L.GOOGLE.COM (pri: 20)...
TXT1v=spf1 a mx include:_spf.serverpark.dk ~
SOA1ns4.dns-123.net admin.dns-123.net

Analysis

IP Addresses

byco.dk has exactly one IP address — 5.103.46.102.

dugo.dk, mail.mortenbracker.dk, sabroe.dk plus two other host names have IP numbers in common with byco.dk.

Name Servers

byco.dk is served by three name servers: ns4.dns-123.net, ns5.dns-123.net and ns6.dns-123.net.

At least some of byco.dk's name servers are shared with other domains, for example kolman.dk, wichmann-hansen.dk, kickboxingacademy.dk and two more.

ns4.dns-123.net has IP address 35.198.132.83, ns5.dns-123.net has IP address 35.187.184.173 and ns6.dns-123.net has IP address 35.228.54.1 — one address each.

Mail Servers

byco.dk uses 7 mail servers for delivery: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.

At least some of the mail servers used by byco.dk are shared with other domains: gastricsleeveturkey.co.uk, ns500734.ns500699.ns500693.ns500699.ns500693.ns500699.ns500699.ns500699.ns500699.ns500588.ns500699.ns500693.ns500683.ns500632.ns500468.ns500110.dtrkdll.com, ns500758.ns500759.ns500758.ns500759.ns500698.ns500736.ns500698.ns500698.ns500736.ns500698.ns500576.ns500698.ns500686.ns500652.ns500619.trackreceptor.com and two others among them.

These mail servers are often deployed together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and 3 other mail servers.

Host names pointing to two IP addresses:

The A records for aspmx2.googlemail.com return 192.178.234.26 and 2800:3f0:4003:c14::1b.

The A records for aspmx3.googlemail.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

The A records for aspmx4.googlemail.com return 192.178.223.26 and 2a00:1450:4009:c0f::1a.

The A records for aspmx5.googlemail.com return 172.253.157.27 and 2a00:1450:400c:c23::1a.

The A records for aspmx.l.google.com return 142.251.163.27 and 2607:f8b0:4004:c21::1b.

The A records for alt1.aspmx.l.google.com return 192.178.234.27 and 2800:3f0:4003:c14::1b.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1a.

aspmx2.googlemail.com and alt1.aspmx.l.google.com each have 2800:3f0:4003:c14::1b IP addresses.

aspmx3.googlemail.com and alt2.aspmx.l.google.com each have 2a00:1450:400b:c02::1a IP addresses.

aspmx3.googlemail.com and alt2.aspmx.l.google.com each have 172.253.116.27 IP addresses.