klassbox.eu - robtex.com

klassbox.eu

DNSSEC🔒 Signed (DS record present)
A185.37.71.56🇳🇱 CLDIN-NL185.37.68.0/22
PTRserver074.yourhosting.nl
NSns3.firstfind.nl ⭐
A2a01:b940:1057::53🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRns3.firstfind.nl
A5.157.86.222🇳🇱 CLDIN-NL5.157.80.0/21
PTRns3.firstfind.nl
NSns4.firstfind.nl
A2a01:b940:1057::54🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
A5.157.87.222🇳🇱 CLDIN-NL5.157.80.0/21
PTRns4.firstfind.nl
NSns5.firstfind.net
A2a03:b0c0:2:d0::1183:f001🇳🇱 DIGITALOCEAN2a03:b0c0:2::/48 DigitalOcean
PTRns5.firstfind.net
A178.128.248.2🇳🇱 DIGITALOCEAN178.128.240.0/20 DigitalOcean
PTRns5.firstfind.net
MXprimary.yourfilter.nl ⭐
A2a01:b941:2::23🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse23-yh.route25.eu
A2a01:b941:2::24🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse22-yh.route25.eu
A2a01:b941:2::25🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse21-yh.route25.eu
A2a01:b941:2::26🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse20-yh.route25.eu
A2a01:b941:2::27🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse19-yh.route25.eu
A2a01:b941:2::28🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse18-yh.route25.eu
A2a01:b941:2::29🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse17-yh.route25.eu
A2a01:b941:2::30🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse16-yh.route25.eu
A2a05:1500:702:9:1c00:2aff:fe00:5554🇳🇱 CLDIN-NL2a05:1500::/29
PTRse28-yh.route25.eu
A2a05:1500:702:9:1c00:7fff:fe00:5556🇳🇱 CLDIN-NL2a05:1500::/29
PTRse30-yh.route25.eu
A2a05:1500:702:9:1c00:a3ff:fe00:5558🇳🇱 CLDIN-NL2a05:1500::/29
PTRse26-yh.route25.eu
A2a05:1500:702:9:1c00:a5ff:fe00:5553🇳🇱 CLDIN-NL2a05:1500::/29
PTRse27-yh.route25.eu
A2a05:1500:702:9:1c00:f0ff:fe00:5555🇳🇱 CLDIN-NL2a05:1500::/29
PTRse29-yh.route25.eu
A185.103.241.20🇳🇱 CLDIN-NL185.103.240.0/22
PTRse27-yh.route25.eu
A185.103.241.21🇳🇱 CLDIN-NL185.103.240.0/22
PTRse28-yh.route25.eu
A185.103.241.22🇳🇱 CLDIN-NL185.103.240.0/22
PTRse29-yh.route25.eu
A185.103.241.23🇳🇱 CLDIN-NL185.103.240.0/22
PTRse30-yh.route25.eu
A185.103.241.25🇳🇱 CLDIN-NL185.103.240.0/22
PTRse26-yh.route25.eu
A185.223.33.23🇳🇱 CLDIN-NL185.223.32.0/22
PTRse23-yh.route25.eu
A185.223.33.24🇳🇱 CLDIN-NL185.223.32.0/22
PTRse22-yh.route25.eu
A185.223.33.27🇳🇱 CLDIN-NL185.223.32.0/22
PTRse19-yh.route25.eu
A185.223.33.28🇳🇱 CLDIN-NL185.223.32.0/22
PTRse18-yh.route25.eu
A185.223.33.29🇳🇱 CLDIN-NL185.223.32.0/22
PTRse17-yh.route25.eu
A185.223.33.30🇳🇱 CLDIN-NL185.223.32.0/22
PTRse16-yh.route25.eu
MXfallback.yourfilter.nl(20)
A2a01:b941:2::23🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse23-yh.route25.eu
A2a01:b941:2::24🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse22-yh.route25.eu
A2a01:b941:2::28🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse18-yh.route25.eu
A2a01:b941:2::29🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse17-yh.route25.eu
A2a01:b941:2::30🇳🇱 CLDIN-NL2a01:b940::/29 YOURHOSTING
PTRse16-yh.route25.eu
A2a05:1500:702:9:1c00:7fff:fe00:5556🇳🇱 CLDIN-NL2a05:1500::/29
PTRse30-yh.route25.eu
A2a05:1500:702:9:1c00:f0ff:fe00:5555🇳🇱 CLDIN-NL2a05:1500::/29
PTRse29-yh.route25.eu
A185.103.241.22🇳🇱 CLDIN-NL185.103.240.0/22
PTRse29-yh.route25.eu
A185.103.241.23🇳🇱 CLDIN-NL185.103.240.0/22
PTRse30-yh.route25.eu
A185.223.33.23🇳🇱 CLDIN-NL185.223.32.0/22
PTRse23-yh.route25.eu
A185.223.33.25🇳🇱 CLDIN-NL185.223.32.0/22
PTRse21-yh.route25.eu
A185.223.33.26🇳🇱 CLDIN-NL185.223.32.0/22
PTRse20-yh.route25.eu
A185.223.33.27🇳🇱 CLDIN-NL185.223.32.0/22
PTRse19-yh.route25.eu
A185.223.33.30🇳🇱 CLDIN-NL185.223.32.0/22
PTRse16-yh.route25.eu
TXTv=spf1 a mx include:_spf.yourfilter.nl -all
SOAns3.firstfind.nlhostmaster@firstfind.nl 2026-03-26 #1

eu

DNSSEC🔒 Signed (DS record present)
NSsi.dns.eu ⭐
NSbe.dns.eu
NSw.dns.eu
NSx.dns.eu
NSy.dns.eu
SOAsi.dns.eutech@eurid.eu serial=1122686628

Same first word

klassbox.eu

DNS History

10 records (6 active, 4 former)

20192020202120222023202420252026NSns3.firstfind.nlns4.firstfind.nlns5.firstfind.netMXfallback.yourfilter.nlprimary.yourfilter.nlmx1.firstfind.nlmx2.firstfind.nlserver5.firstfind.nlA185.37.71.565.157.84.13
●NSns3.firstfind.nl2018-07-04 → 2026-03-27 · 2 obs
● 2018-07-04 21:12:14
● 2026-03-27 08:05:20
●NSns4.firstfind.nl2018-07-04 → 2026-03-27 · 2 obs
● 2018-07-04 21:12:14
● 2026-03-27 08:05:20
●NSns5.firstfind.net2018-07-04 → 2026-03-27 · 2 obs
● 2018-07-04 21:12:14
● 2026-03-27 08:05:20
●MXfallback.yourfilter.nl2021-06-29 → 2026-03-27 · 3 obs
○ 2018-07-04 21:12:14
● 2021-06-29 20:41:02
● 2026-03-27 08:05:20
○MXmx1.firstfind.nl2018-07-04 → 2018-07-04 · 3 obs
● 2018-07-04 21:12:14
○ 2021-06-29 20:41:02
○ 2026-03-27 08:05:20
○MXmx2.firstfind.nl2018-07-04 → 2018-07-04 · 3 obs
● 2018-07-04 21:12:14
○ 2021-06-29 20:41:02
○ 2026-03-27 08:05:20
●MXprimary.yourfilter.nl2021-06-29 → 2026-03-27 · 3 obs
○ 2018-07-04 21:12:14
● 2021-06-29 20:41:02
● 2026-03-27 08:05:20
○MXserver5.firstfind.nl2018-07-04 → 2018-07-04 · 3 obs
● 2018-07-04 21:12:14
○ 2021-06-29 20:41:02
○ 2026-03-27 08:05:20
●A185.37.71.562021-06-29 → 2026-03-27 · 3 obs
○ 2018-07-04 21:12:14
● 2021-06-29 20:41:02
● 2026-03-27 08:05:20
○A5.157.84.132018-07-04 → 2018-07-04 · 3 obs
● 2018-07-04 21:12:14
○ 2021-06-29 20:41:02
○ 2026-03-27 08:05:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
euw.dns.eu, x.dns.eu, y.dns.eu, be.dns.eu...-
klassbox.euns3.firstfind.nl, ns4.firstfind.nl, ns5.firstfind.net-

✅ Authoritative Response

Server:5.157.86.222

NS records: ns3.firstfind.nl, ns4.firstfind.nl, ns5.firstfind.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 672ms | Queries: -

📄 Records

TypeCountSample Data
A1185.37.71.56
NS3ns3.firstfind.nl, ns5.firstfind.net...
MX2fallback.yourfilter.nl (pri: 20), primary.yourfilter.nl (pri: 10)
TXT1v=spf1 a mx include:_spf.yourfilter.nl -
SOA1ns3.firstfind.nl hostmaster.firstfind.nl

Analysis

IP Addresses

klassbox.eu points to IP number 185.37.71.56.

For instance, other host names rkh.nu, erikpost.nl, annetbult.nl, senvia.nl and azienda-cerqueto.de share IP numbers with klassbox.eu.

Name Servers

The delegation for klassbox.eu is handled by three name servers: ns5.firstfind.net, ns3.firstfind.nl and ns4.firstfind.nl.

klassbox.eu shares name servers with other domains at least partially, for example eduplaying.com, keramab.eu, soudan.nl, sadc.nl and websonic.nl.

Host names with two IPs:

ns5.firstfind.net points to 2a03:b0c0:2:d0::1183:f001 and 178.128.248.2

ns3.firstfind.nl points to 2a01:b940:1057::53 and 5.157.86.222

ns4.firstfind.nl points to 2a01:b940:1057::54 and 5.157.87.222

Mail Servers

Two mail servers fallback.yourfilter.nl and primary.yourfilter.nl handle klassbox.eu.

klassbox.eu shares the same mail server setup as other domains, for instance tijdvoorpolitiek.nl, gamerondje.nl, schoenverzorging.nl, yusenlogisticsedam.nl and ebrompton.com.

klassbox.eu shares some mail servers with other domains, including sijmonsbergen.com, tenniglo.eu, hrdv.nl and companytocollege.nl.

Host names with 24 IPs:

Host primary.yourfilter.nl points to: 2a01:b941:2::23, 2a01:b941:2::24, 2a01:b941:2::25, 2a01:b941:2::26, 2a01:b941:2::27, 2a01:b941:2::28, 2a01:b941:2::29, 2a01:b941:2::30, 2a05:1500:702:9:1c00:2aff:fe00:5554, 2a05:1500:702:9:1c00:7fff:fe00:5556, 2a05:1500:702:9:1c00:a3ff:fe00:5558, 2a05:1500:702:9:1c00:a5ff:fe00:5553, 2a05:1500:702:9:1c00:f0ff:fe00:5555, 185.103.241.20, 185.103.241.21, 185.103.241.22, 185.103.241.23, 185.103.241.25, 185.223.33.23, 185.223.33.24, 185.223.33.27, 185.223.33.28, 185.223.33.29 and 185.223.33.30.

Host names with 14 IPs:

Host fallback.yourfilter.nl points to: 2a01:b941:2::23, 2a01:b941:2::24, 2a01:b941:2::28, 2a01:b941:2::29, 2a01:b941:2::30, 2a05:1500:702:9:1c00:7fff:fe00:5556, 2a05:1500:702:9:1c00:f0ff:fe00:5555, 185.103.241.22, 185.103.241.23, 185.223.33.23, 185.223.33.25, 185.223.33.26, 185.223.33.27 and 185.223.33.30.

Host names that point to 2a01:b941:2::23: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 2a01:b941:2::24: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 2a01:b941:2::28: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 2a01:b941:2::29: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 2a01:b941:2::30: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 2a05:1500:702:9:1c00:7fff:fe00:5556: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 2a05:1500:702:9:1c00:f0ff:fe00:5555: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 185.103.241.22: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 185.103.241.23: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 185.223.33.23: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 185.223.33.27: primary.yourfilter.nl and fallback.yourfilter.nl.

Host names that point to 185.223.33.30: primary.yourfilter.nl and fallback.yourfilter.nl.