rfbtraining.com - robtex.com

rfbtraining.com

DNSSEC⚠️ Not signed
A185.37.70.41🇳🇱 CLDIN-NL185.37.68.0/22
PTRserver043.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 2020-09-25 #1

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778692166

Subdomains

fallback.rfbtraining.com

Similar names

bfrtraining.com

DNS History

18 records (6 active, 12 former)

20162017201820192020202120222023202420252026NSns3.firstfind.nlns4.firstfind.nlns5.firstfind.netns03.2is.nlns04.2is.bens05.2is.nlns1.webburodns.nlns2.webburodns.nlMXfallback.yourfilter.nlprimary.yourfilter.nlfallback.rfbtraining.comfallbackmx.spamservice.nllastmx.spamservice.nlmail.rfbtraining.commx.spamservice.nlA185.37.70.4162.221.209.14482.94.160.228
○NSns03.2is.nl2017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○NSns04.2is.be2017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○NSns05.2is.nl2017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○NSns1.webburodns.nl2015-08-08 → 2016-12-04 · 4 obs
● 2015-08-08 05:53:12
● 2016-12-04 12:12:10
○ 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○NSns2.webburodns.nl2015-08-08 → 2016-12-04 · 4 obs
● 2015-08-08 05:53:12
● 2016-12-04 12:12:10
○ 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
●NSns3.firstfind.nl2026-05-13 → 2026-05-13 · 2 obs
○ 2017-10-13 02:25:28
● 2026-05-13 17:38:38
●NSns4.firstfind.nl2026-05-13 → 2026-05-13 · 2 obs
○ 2017-10-13 02:25:28
● 2026-05-13 17:38:38
●NSns5.firstfind.net2026-05-13 → 2026-05-13 · 2 obs
○ 2017-10-13 02:25:28
● 2026-05-13 17:38:38
○MXfallback.rfbtraining.com2015-08-08 → 2016-12-04 · 4 obs
● 2015-08-08 05:53:12
● 2016-12-04 12:12:10
○ 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
●MXfallback.yourfilter.nl2026-05-13 → 2026-05-13 · 2 obs
○ 2017-10-13 02:25:28
● 2026-05-13 17:38:38
○MXfallbackmx.spamservice.nl2017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○MXlastmx.spamservice.nl2017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○MXmail.rfbtraining.com2015-08-08 → 2016-12-04 · 4 obs
● 2015-08-08 05:53:12
● 2016-12-04 12:12:10
○ 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○MXmx.spamservice.nl2017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
●MXprimary.yourfilter.nl2026-05-13 → 2026-05-13 · 2 obs
○ 2017-10-13 02:25:28
● 2026-05-13 17:38:38
●A185.37.70.412026-05-13 → 2026-05-13 · 2 obs
○ 2017-10-13 02:25:28
● 2026-05-13 17:38:38
○A62.221.209.1442017-10-13 → 2017-10-13 · 3 obs
○ 2016-12-04 12:12:10
● 2017-10-13 02:25:28
○ 2026-05-13 17:38:38
○A82.94.160.2282015-08-08 → 2016-12-04 · 4 obs
● 2015-08-08 05:53:12
● 2016-12-04 12:12:10
○ 2017-10-13 02:25:28
○ 2026-05-13 17:38:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, a.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net...-
rfbtraining.comns4.firstfind.nl, ns3.firstfind.nl, ns5.firstfind.net-

✅ Authoritative Response

Server:178.128.248.2

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rfbtraining.com (unsigned zone)

⏱️ Timing

Total: 424ms | Queries: -

📄 Records

TypeCountSample Data
A1185.37.70.41
NS3ns5.firstfind.net, ns4.firstfind.nl...
MX2primary.yourfilter.nl (pri: 10), fallback.yourfilter.nl (pri: 20)
TXT1v=spf1 a mx include:_spf.yourfilter.nl -
SOA1ns3.firstfind.nl hostmaster@firstfind.nl

Analysis

Hierarchy

rfbtraining.com is the parent of fallback.rfbtraining.com.

IP Addresses

rfbtraining.com resolves to a single IP: 185.37.70.41.

Other host names, for instance amcn.nl, globalize.nl, ad-factor.nl, server043.yourhosting.nl and sebiha.nl share IP numbers with rfbtraining.com.

Name Servers

rfbtraining.com delegates to three name servers: ns5.firstfind.net, ns3.firstfind.nl and ns4.firstfind.nl.

rfbtraining.com shares some name servers with other domains, for example ezinsure.nl, ap-pi.fr, coertpeeters.com, bodyslide.nl and anna-art.eu.

Host names with two IP numbers:

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

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

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

Mail Servers

rfbtraining.com is served by two mail servers: fallback.yourfilter.nl and primary.yourfilter.nl.

rfbtraining.com shares the mail server setup with other domains, for example esmm.nl, gitaarliedjes.com, piscaer.net, rozemarijnenthijm.nl and anunnaki.nl.

rfbtraining.com shares some mail servers with other domains, at least partially, for instance robertkoolstra.com, bestuv.com and wepp.org.

Host names with 24 IP numbers point 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 fourteen IP numbers point 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.

Note that primary.yourfilter.nl and fallback.yourfilter.nl appear as targets for multiple host names.