concurrentengineering.nl - dns.ninja
concurrentengineering.nl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.40.57.201🇳🇱 TRANS-IX-AS185.40.57.0/24 | ||||||
| NS | ns1.leeuwenharthosting.nl ⭐ | ||||||
| A | 185.40.57.200🇳🇱 TRANS-IX-AS185.40.57.0/24 | ||||||
| NS | ns2.leeuwenharthosting.eu | ||||||
| A | 185.40.56.235🇳🇱 TRANS-IX-AS185.40.56.0/24 | ||||||
| NS | ns3.leeuwenharthosting.net | ||||||
| A | 185.40.56.235🇳🇱 TRANS-IX-AS185.40.56.0/24 | ||||||
| MX | mail2.concurrentengineering.nl ⭐ | ||||||
| MX | mail.concurrentengineering.nl(50) | ||||||
| A | 185.40.57.201🇳🇱 TRANS-IX-AS185.40.57.0/24 | ||||||
| SOA | ns1.leeuwenharthosting.nldnsadmin@leeuwenhartdns.nl 2026-05-08 #1 | ||||||
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-08-13 07:30:01 +0000 (EPOCH 1786606201) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-08-13 #15 | ||||||
Subdomains
Same first word
concurrentengineering.com |
concurrentengineering.nl |
DNS History
7 records (6 active, 1 former)
●NSns1.leeuwenharthosting.nl2015-08-19 → 2026-08-13 · 2 obs
● 2026-08-13 08:12:34
●NSns2.leeuwenharthosting.eu2015-08-19 → 2026-08-13 · 2 obs
● 2026-08-13 08:12:34
●NSns3.leeuwenharthosting.net2015-08-19 → 2026-08-13 · 2 obs
● 2026-08-13 08:12:34
●MXmail.concurrentengineering.nl2015-08-19 → 2026-08-13 · 2 obs
● 2026-08-13 08:12:34
●MXmail2.concurrentengineering.nl2015-08-19 → 2026-08-13 · 2 obs
● 2026-08-13 08:12:34
●A185.40.57.2012026-06-01 → 2026-08-13 · 3 obs
● 2026-06-01 09:43:20
● 2026-08-13 08:12:34
○A83.98.137.2122015-08-19 → 2026-05-07 · 4 obs
● 2026-05-07 08:06:08
○ 2026-06-01 09:43:20
○ 2026-08-13 08:12:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns1.dns.nl, ns3.dns.nl, ns4.dns.nl | - |
| concurrentengineering.nl | ns1.leeuwenharthosting.nl, ns2.leeuwenharthosting.eu, ns3.leeuwenharthosting.net | 1 record |
✅ Authoritative Response
Server:185.40.56.235
NS records: ns1.leeuwenharthosting.nl, ns2.leeuwenharthosting.eu, ns3.leeuwenharthosting.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for concurrentengineering.nl (unsigned zone)
⏱️ Timing
Total: 4185ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.40.57.201 |
| NS | 3 | ns3.leeuwenharthosting.net, ns2.leeuwenharthosting.eu... |
| MX | 2 | mail.concurrentengineering.nl (pri: 10), mail2.concurrentengineering.nl (pri: 50) |
| SOA | 1 | ns1.leeuwenharthosting.nl dnsadmin.leeuw |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns1.leeuwenharthosting.nl)
Analysis
Hierarchy
The parent domain of mail.concurrentengineering.nl and mail2.concurrentengineering.nl is concurrentengineering.nl.
IP Addresses
concurrentengineering.nl directs to one IP number, which is 185.40.57.201.
Among the host names that share IP numbers with concurrentengineering.nl are mail.gsvb.nl, mail.bluepeterfoundation.org, mailinglists.nl and two others.
Name Servers
Three name servers are authoritative for concurrentengineering.nl: ns2.leeuwenharthosting.eu, ns3.leeuwenharthosting.net and ns1.leeuwenharthosting.nl.
concurrentengineering.nl shares at least some of its name servers with other domains, including multilist.nl, boekenmarkt.net, green-continent.com and two others.
These name servers are frequently paired with the name servers ns6.leeuwenharthosting.net and ns9.leeuwenharthosting.net.
Three hostnames, each with one IP address: ns2.leeuwenharthosting.eu → 185.40.56.235, ns3.leeuwenharthosting.net → 185.40.56.235 and ns1.leeuwenharthosting.nl → 185.40.57.200.
These two host names — ns2.leeuwenharthosting.eu and ns3.leeuwenharthosting.net — each point to 185.40.56.235 IP addresses.
Mail Servers
The MX records for concurrentengineering.nl point to two mail servers: mail2.concurrentengineering.nl and mail.concurrentengineering.nl.
Hosts that resolve to one IP address:
mail.concurrentengineering.nl points to the IP address 185.40.57.201.