`rt-security.nl`

DNSSEC	🔒 Signed (DS record present)
A	2a06:2ec0:1::159^{🇳🇱 AS-ZXCS2a06:2ec0::/32}
		PTR	`web0159.zxcs.nl`
A	185.104.29.154^{🇳🇱 AS-ZXCS185.104.29.0/24}
NS	`ns.zxcs.nl` ⭐
		A	2a06:2ec0:1::10^{🇳🇱 AS-ZXCS2a06:2ec0::/32}
			PTR	`ns1.zxcs.nl`
		A	185.104.28.19^{🇳🇱 AS-ZXCS185.104.28.0/24}
			PTR	`ns1.zxcs.nl`
NS	`ns.zxcs.be`
		A	2a03:b0c0:3:d0::116:2001^{🇩🇪 DIGITALOCEAN2a03:b0c0:3::/48 DigitalOcean}
			PTR	`ns2.zxcs.nl`
		A	46.101.179.64^{🇩🇪 DIGITALOCEAN46.101.128.0/17 DigitalOcean}
			PTR	`ns2.zxcs.nl`
NS	`ns.zxcs.eu`
		A	2a03:b0c0:2:d0::57:1001^{🇳🇱 DIGITALOCEAN2a03:b0c0:2::/48 DigitalOcean}
			PTR	`ns3.zxcs.nl`
		A	178.62.208.8^{🇳🇱 DIGITALOCEAN178.62.192.0/18 DigitalOcean}
			PTR	`ns3.zxcs.nl`
MX	`spamrelay.zxcs.nl` ⭐
		A	2a06:2ec0:1::ffec^{🇳🇱 AS-ZXCS2a06:2ec0::/32}
			PTR	`spamrelay.zxcs.nl`
		A	185.104.28.12^{🇳🇱 AS-ZXCS185.104.28.0/24}
			PTR	`spamrelay.zxcs.nl`
TXT	`v=spf1 a mx ip4:185.104.29.154 ip6:2a06:2ec0:1:0:0:0:0:159 include:filter-out...`
SOA	`ns.zxcs.nl`hostmaster@rt-security.nl 2026-03-09 #4

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-04-12 12:00:02 +0000 (EPOCH 1775995202)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-04-12 #24

Same first word

rt-security.nl

rt-security.com

DNS History

14 records (6 active, 8 former)

●NSns.zxcs.be2026-02-18 → 2026-04-12 · 3 obs

○ 2017-12-27 01:18:14
● 2026-02-18 15:30:12
● 2026-04-12 12:48:30

●NSns.zxcs.eu2026-02-18 → 2026-04-12 · 3 obs

○ 2017-12-27 01:18:14
● 2026-02-18 15:30:12
● 2026-04-12 12:48:30

●NSns.zxcs.nl2026-02-18 → 2026-04-12 · 3 obs

○ 2017-12-27 01:18:14
● 2026-02-18 15:30:12
● 2026-04-12 12:48:30

○NSns1.yourwebhoster.com2015-06-25 → 2017-12-27 · 4 obs

● 2015-06-25 06:11:26
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

○NSns2.yourwebhoster.com2015-06-25 → 2017-12-27 · 4 obs

● 2015-06-25 06:11:26
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

○NSns3.yourwebhoster.nl2015-06-25 → 2017-12-27 · 4 obs

● 2015-06-25 06:11:26
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

○NSns4.yourwebhoster.nl2015-06-25 → 2017-12-27 · 4 obs

● 2015-06-25 06:11:26
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

○MXcluster.onlinemailscanner.com2015-06-25 → 2016-04-30 · 4 obs

● 2015-06-25 06:11:26
● 2016-04-30 06:41:36
○ 2017-01-08 20:15:56
○ 2026-04-12 12:48:30

○MXmx10.onlinemailscanner.com2017-01-08 → 2017-12-27 · 5 obs

○ 2016-04-30 06:41:36
● 2017-01-08 20:15:56
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

○MXmx20.onlinemailscanner.com2017-01-08 → 2017-12-27 · 5 obs

○ 2016-04-30 06:41:36
● 2017-01-08 20:15:56
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

●MXspamrelay.zxcs.nl2026-02-18 → 2026-04-12 · 3 obs

○ 2017-12-27 01:18:14
● 2026-02-18 15:30:12
● 2026-04-12 12:48:30

○A109.71.51.2252015-06-25 → 2017-12-27 · 4 obs

● 2015-06-25 06:11:26
● 2017-12-27 01:18:14
○ 2026-02-18 15:30:12
○ 2026-04-12 12:48:30

●A185.104.29.1542026-02-18 → 2026-04-12 · 3 obs

○ 2017-12-27 01:18:14
● 2026-02-18 15:30:12
● 2026-04-12 12:48:30

●A2a06:2ec0:1::1592026-02-18 → 2026-04-12 · 3 obs

○ 2017-12-27 01:18:14
● 2026-02-18 15:30:12
● 2026-04-12 12:48:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns4.dns.nl, ns3.dns.nl, ns1.dns.nl	-
rt-security.nl	ns.zxcs.be, ns.zxcs.eu, ns.zxcs.nl	-

✅ Authoritative Response

Server:46.101.179.64

NS records: ns.zxcs.be, ns.zxcs.eu, ns.zxcs.nl

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 838ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.104.29.154`
AAAA	1	`2a06:2ec0:1::159`
NS	3	`ns.zxcs.be, ns.zxcs.nl...`
MX	1	`spamrelay.zxcs.nl (pri: 10)`
TXT	1	`v=spf1 a mx ip4:185.104.29.154 ip6:2a06:`
SOA	1	`ns.zxcs.nl hostmaster.rt-security.nl`

Analysis

IP Addresses

rt-security.nl resolves to two IP numbers: 2a06:2ec0:1::159 and 185.104.29.154.

other host names including jrsmakelaars.nl, platina.be, lsdm.nl, mail.trendss.nl and sportprijzentiel.nl share IP numbers with rt-security.nl.

Name Servers

rt-security.nl is delegated to three name servers ns.zxcs.be, ns.zxcs.eu and ns.zxcs.nl.

rt-security.nl at least partially shares name servers with other domains, for instance uitgeverijq.nl, formers.nl, storyward.com, mamamax.nl and tulp.org.

These name servers are commonly used with ns1.zxcs.nl, ns2.zxcs.nl and ns3.zxcs.nl.

Host names with two IP numbers:

ns.zxcs.be points to: 2a03:b0c0:3:d0::116:2001 and 46.101.179.64.

ns.zxcs.eu points to: 2a03:b0c0:2:d0::57:1001 and 178.62.208.8.

ns.zxcs.nl points to: 2a06:2ec0:1::10 and 185.104.28.19.

Mail Servers

rt-security.nl is handled by a single mail server, spamrelay.zxcs.nl.

rt-security.nl shares the same mail server setup as other domains, for instance modelvleugelsdiepenbeek.be, slotwolf.de, battery-powered.net, extremeebony(0x736578).com and blinkuit.nl.

rt-security.nl shares some mail servers with other domains, at least partially, for example quangdo.nl and flowchiropractic.nl.

spamrelay.zxcs.nl resolves to two IP numbers: 2a06:2ec0:1::ffec and 185.104.28.12.

rt-security.nl - robtex.com

rt-security.nl

nl

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`rt-security.nl`

`nl`