codelab.nl - robtex.com
codelab.nl
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-06-17 15:30:01 +0000 (EPOCH 1781710201) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-06-17 #31 | ||||||
MX for
codelab.nl |
Same first word
Similar names
DNS History
15 records (6 active, 9 former)
●NSns0.transip.net2026-06-11 → 2026-06-17 · 3 obs
● 2026-06-11 10:29:30
● 2026-06-17 16:28:26
○NSns01.is.nl2016-04-21 → 2017-05-17 · 5 obs
● 2016-04-21 04:43:14
● 2017-05-17 17:12:14
○ 2026-06-11 10:29:30
○ 2026-06-17 16:28:26
○NSns02.is.nl2016-04-21 → 2017-05-17 · 5 obs
● 2016-04-21 04:43:14
● 2017-05-17 17:12:14
○ 2026-06-11 10:29:30
○ 2026-06-17 16:28:26
○NSns03.is.nl2016-04-21 → 2017-05-17 · 5 obs
● 2016-04-21 04:43:14
● 2017-05-17 17:12:14
○ 2026-06-11 10:29:30
○ 2026-06-17 16:28:26
○NSns1.nxs.nl2015-06-18 → 2016-02-02 · 4 obs
● 2016-02-02 20:01:56
○ 2016-04-21 04:43:14
○ 2026-06-17 16:28:26
●NSns1.transip.nl2026-06-11 → 2026-06-17 · 3 obs
● 2026-06-11 10:29:30
● 2026-06-17 16:28:26
○NSns2.nxs.nl2015-06-18 → 2016-02-02 · 4 obs
● 2016-02-02 20:01:56
○ 2016-04-21 04:43:14
○ 2026-06-17 16:28:26
●NSns2.transip.eu2026-06-11 → 2026-06-17 · 3 obs
● 2026-06-11 10:29:30
● 2026-06-17 16:28:26
○NSns3.nxs.nl2015-06-18 → 2016-02-02 · 4 obs
● 2016-02-02 20:01:56
○ 2016-04-21 04:43:14
○ 2026-06-17 16:28:26
●MXcodelab.nl2026-06-11 → 2026-06-17 · 3 obs
● 2026-06-11 10:29:30
● 2026-06-17 16:28:26
○MXfallback2.mx.nxs.nl2015-06-18 → 2017-05-17 · 4 obs
● 2017-05-17 17:12:14
○ 2026-06-11 10:29:30
○ 2026-06-17 16:28:26
○MXlb.mailscanner.nxs.nl2015-06-18 → 2017-05-17 · 4 obs
● 2017-05-17 17:12:14
○ 2026-06-11 10:29:30
○ 2026-06-17 16:28:26
●MXrelay.transip.nl2026-06-11 → 2026-06-17 · 3 obs
● 2026-06-11 10:29:30
● 2026-06-17 16:28:26
●A149.210.237.232026-06-11 → 2026-06-17 · 3 obs
● 2026-06-11 10:29:30
● 2026-06-17 16:28:26
○A212.204.197.822015-06-18 → 2017-05-17 · 4 obs
● 2017-05-17 17:12:14
○ 2026-06-11 10:29:30
○ 2026-06-17 16:28:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns1.dns.nl, ns3.dns.nl, ns4.dns.nl | - |
| codelab.nl | ns0.transip.net, ns1.transip.nl, ns2.transip.eu | 2 records |
✅ Authoritative Response
Server:195.135.195.195
NS records: ns0.transip.net, ns1.transip.nl, ns2.transip.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 913ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 149.210.237.23 |
| NS | 3 | ns1.transip.nl, ns2.transip.eu... |
| MX | 2 | codelab.nl (pri: 10), relay.transip.nl (pri: 20) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns0.transip.net hostmaster.transip.nl |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.transip.nl, ns1.transip.nl)
Analysis
Mail Server Role
codelab.nl handles its own mail, functioning as its own mail server.
relay.transip.nl is a mail server commonly deployed alongside codelab.nl.
IP Addresses
codelab.nl resolves to just one IP address, 149.210.237.23.
Two other host names, along with railexchange.nl, projectconfigurator.nl and 149-210-237-23.colo.transip.net, also share IP numbers with codelab.nl.
Name Servers
codelab.nl carries NS records delegating to ns2.transip.eu, ns0.transip.net and ns1.transip.nl.
codelab.nl has at least partial name server overlap with other domains, such as artxcel.eu, imcd.info, holland-hardwood.com and two others.
ns2.transip.eu, ns0.transip.net and ns1.transip.nl are three hostnames that each resolve to a pair of IP addresses: ns2.transip.eu to 37.97.199.195 and 2a01:7c8:f:c1f::195, ns0.transip.net to 195.135.195.195 and 2a01:7c8:dddd:195::195, and ns1.transip.nl to 195.8.195.195 and 2a01:7c8:7000:195::195.
Mail Servers
codelab.nl relies on two mail servers for delivery — codelab.nl and relay.transip.nl.
There is at least a partial MX overlap between codelab.nl and other domains, including qunde.nl, refbeoordelingen.nl, probea.nl and two others.
These mail servers often co-occur with the mail servers mail.webplace4u.nl.
Host names that resolve to four IP numbers:
relay.transip.nl has four IP addresses: 149.210.149.12, 149.210.149.29, 2a01:7c8:7c8::12 and 2a01:7c8:7c8::29.
Host names that point to one IP address:
The hostname codelab.nl resolves to 149.210.237.23.