`certus-software.nl`

DNSSEC	🔒 Signed (DS record present)
A	145.131.10.225^{🇳🇱 CLDIN-NL145.131.10.0/24}
NS	`ns1.argewebhosting.eu` ⭐
		A	2a05:1500:702:0:1c00:eff:fe00:ce^{🇳🇱 CLDIN-NL2a05:1500::/29}
			PTR	`ns1.argewebhosting.eu`
		A	31.25.98.210^{🇳🇱 CLDIN-NL31.25.96.0/21 PCextreme B.V.}
			PTR	`ns1.argewebhosting.eu`
NS	`ns2.argewebhosting.com`
		A	2a05:1500:702:0:1c00:13ff:fe00:a5^{🇳🇱 CLDIN-NL2a05:1500::/29}
			PTR	`ns2.argewebhosting.com`
		A	31.25.98.169^{🇳🇱 CLDIN-NL31.25.96.0/21 PCextreme B.V.}
			PTR	`ns2.argewebhosting.com`
NS	`ns3.argewebhosting.nl`
		A	2a05:1500:600:7:1c00:55ff:fe00:f1a^{🇳🇱 CLDIN-NL2a05:1500:600::/40 PCextreme B.V. - Amsterdam (ams02)}
			PTR	`ns3.argewebhosting.nl`
		A	92.63.168.137^{🇳🇱 CLDIN-NL92.63.168.0/21 PCextreme IPv4 Route}
			PTR	`ns3.argewebhosting.nl`
MX	`localhost.certus-software.nl` ⭐
		A	127.0.0.1
SOA	`ns1.argewebhosting.eu`hostmaster@argeweb@nl 2021-12-14 #0

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-03-26 11:00:01 +0000 (EPOCH 1774522801)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-03-26 #22

Subdomains

localhost.certus-software.nl

Same first word

certus-software.nl

DNS History

12 records (5 active, 7 former)

○NSns.netground.nl2015-07-06 → 2016-04-20 · 4 obs

● 2015-07-06 17:40:04
● 2016-04-20 13:20:48
○ 2016-11-29 20:23:26
○ 2026-03-26 11:40:46

○NSns01.is.nl2016-11-29 → 2016-11-29 · 4 obs

○ 2016-04-20 13:20:48
● 2016-11-29 20:23:26
○ 2026-02-20 18:52:46
○ 2026-03-26 11:40:46

○NSns02.is.nl2016-11-29 → 2016-11-29 · 4 obs

○ 2016-04-20 13:20:48
● 2016-11-29 20:23:26
○ 2026-02-20 18:52:46
○ 2026-03-26 11:40:46

○NSns03.is.nl2016-11-29 → 2016-11-29 · 4 obs

○ 2016-04-20 13:20:48
● 2016-11-29 20:23:26
○ 2026-02-20 18:52:46
○ 2026-03-26 11:40:46

●NSns1.argewebhosting.eu2026-02-20 → 2026-03-26 · 3 obs

○ 2016-11-29 20:23:26
● 2026-02-20 18:52:46
● 2026-03-26 11:40:46

●NSns2.argewebhosting.com2026-02-20 → 2026-03-26 · 3 obs

○ 2016-11-29 20:23:26
● 2026-02-20 18:52:46
● 2026-03-26 11:40:46

○NSns2.netground.com2015-07-06 → 2016-04-20 · 4 obs

● 2015-07-06 17:40:04
● 2016-04-20 13:20:48
○ 2016-11-29 20:23:26
○ 2026-03-26 11:40:46

●NSns3.argewebhosting.nl2026-02-20 → 2026-03-26 · 3 obs

○ 2016-11-29 20:23:26
● 2026-02-20 18:52:46
● 2026-03-26 11:40:46

○NSns3.netground.eu2015-07-06 → 2016-04-20 · 4 obs

● 2015-07-06 17:40:04
● 2016-04-20 13:20:48
○ 2016-11-29 20:23:26
○ 2026-03-26 11:40:46

●MXlocalhost.certus-software.nl2015-07-06 → 2026-03-26 · 5 obs

● 2015-07-06 17:40:04
● 2026-03-22 04:27:46
○ 2026-03-23 17:45:38
● 2026-03-26 11:40:44
● 2026-03-26 11:40:46

●A145.131.10.2252026-02-20 → 2026-03-26 · 6 obs

○ 2016-11-29 20:23:26
● 2026-02-20 18:52:46
● 2026-03-22 04:27:46
○ 2026-03-23 17:45:38
● 2026-03-26 11:40:44
● 2026-03-26 11:40:46

○A87.250.129.1512015-07-06 → 2016-11-29 · 4 obs

● 2015-07-06 17:40:04
● 2016-11-29 20:23:26
○ 2026-02-20 18:52:46
○ 2026-03-26 11:40:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
certus-software.nl	ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.nl	2 records

✅ Authoritative Response

Server:31.25.98.210

NS records: ns1.argewebhosting.eu, ns2.argewebhosting.com, ns3.argewebhosting.nl

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 705ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`145.131.10.225`
NS	3	`ns2.argewebhosting.com, ns1.argewebhosting.eu...`
MX	1	`localhost.certus-software.nl (pri: 20)`
SOA	1	`ns1.argewebhosting.eu hostmaster@argeweb`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns3.argewebhosting.nl, ns3.argewebhosting.nl)

Analysis

Hierarchy

certus-software.nl is the parent of localhost.certus-software.nl.

IP Addresses

certus-software.nl resolves to a single IP: 145.131.10.225.

Other host names, for instance www.fransdewijs.nl, 360bizz.be, gininvest.com, theofflinespot.com and leasezeker.nl share IP numbers with certus-software.nl.

Name Servers

certus-software.nl delegates to three name servers: ns2.argewebhosting.com, ns1.argewebhosting.eu and ns3.argewebhosting.nl.

certus-software.nl shares some name servers with other domains, for example ipa-bv.nl, enpassant.org, icronics.eu, otolift.org and t-issue.nl.

These name servers are commonly used with the name servers ns.argewebhosting.nl.

Host names with two IP numbers:

ns2.argewebhosting.com: 2a05:1500:702:0:1c00:13ff:fe00:a5 and 31.25.98.169

ns1.argewebhosting.eu: 2a05:1500:702:0:1c00:eff:fe00:ce and 31.25.98.210

ns3.argewebhosting.nl: 2a05:1500:600:7:1c00:55ff:fe00:f1a and 92.63.168.137

Mail Servers

certus-software.nl is handled by a single mail server, localhost.certus-software.nl.

Host name localhost.certus-software.nl points to IP 127.0.0.1.

certus-software.nl - robtex.com