educ.lu - dns.ninja
educ.lu
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.restena.lu ⭐ | ||||||
| A | 2001:a18:1::23🇱🇺 RESTENA2001:a18::/29 Fondation RESTENA | ||||||
| A | 158.64.1.23🇱🇺 RESTENA158.64.0.0/16 Fondation RESTENA | ||||||
| NS | ns2.restena.lu | ||||||
| A | 2a04:c46:e00:e7a1:477:a6ff:fe00:afb🇨🇭 exoscale2a04:c46::/32 | ||||||
| PTR | ns2.restena.lu | ||||||
| A | 91.92.119.210🇩🇪 exoscale91.92.118.0/23 | ||||||
| PTR | ns2.restena.lu | ||||||
| NS | ns3.restena.lu | ||||||
| A | 2001:a18:6:2::45🇱🇺 RESTENA2001:a18::/29 Fondation RESTENA | ||||||
| A | 158.64.12.45🇱🇺 RESTENA158.64.0.0/16 Fondation RESTENA | ||||||
| MX | smtpgate1.restena.lu ⭐ | ||||||
| A | 2001:a18:1::58🇱🇺 RESTENA2001:a18::/29 Fondation RESTENA | ||||||
| PTR | smtpgate1.restena.lu | ||||||
| A | 158.64.1.58🇱🇺 RESTENA158.64.0.0/16 Fondation RESTENA | ||||||
| PTR | smtpgate1.restena.lu | ||||||
| MX | smtpgate2.restena.lu ⭐ | ||||||
| A | 2001:a18:1::59🇱🇺 RESTENA2001:a18::/29 Fondation RESTENA | ||||||
| A | 158.64.1.59🇱🇺 RESTENA158.64.0.0/16 Fondation RESTENA | ||||||
| PTR | smtpgate2.restena.lu | ||||||
| SOA | ns1.restena.lunoc@restena.lu serial=1785196566 | ||||||
lu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | 1.ns.lu ⭐ | ||||||
| NS | g.dns.lu | ||||||
| NS | i.dns.lu | ||||||
| NS | j.dns.lu | ||||||
| NS | k.dns.lu | ||||||
| NS | p.dns.lu | ||||||
| NS | r.ns.lu | ||||||
| TXT | Exported: 2026-08-04 12:01:01 | ||||||
| SOA | 1.ns.lunoc@restena.lu serial=1785837672 | ||||||
Subdomains
cpos.educ.lu |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.restena.lu2015-07-08 → 2026-08-04 · 2 obs
● 2026-08-04 10:41:20
●NSns2.restena.lu2015-07-08 → 2026-08-04 · 2 obs
● 2026-08-04 10:41:20
●NSns3.restena.lu2015-07-08 → 2026-08-04 · 2 obs
● 2026-08-04 10:41:20
●MXsmtpgate1.restena.lu2015-07-08 → 2026-08-04 · 2 obs
● 2026-08-04 10:41:20
●MXsmtpgate2.restena.lu2015-07-08 → 2026-08-04 · 2 obs
● 2026-08-04 10:41:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| lu | 1.ns.lu, g.dns.lu, i.dns.lu, j.dns.lu... | 14 records |
| educ.lu | ns2.restena.lu, ns3.restena.lu, ns1.restena.lu | 6 records |
✅ Authoritative Response
Server:91.92.119.210
NS records: ns2.restena.lu, ns3.restena.lu, ns1.restena.lu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for educ.lu (unsigned zone)
⏱️ Timing
Total: 580ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns2.restena.lu, ns1.restena.lu... |
| MX | 2 | smtpgate1.restena.lu (pri: 10), smtpgate2.restena.lu (pri: 10) |
| SOA | 1 | ns1.restena.lu noc.restena.lu |
📌 Glue Records Collected
Total: 20
In-bailiwick: 14 (1.ns.lu, g.dns.lu, i.dns.lu...)
Out-of-bailiwick: 6 (ns3.restena.lu, ns2.restena.lu, ns1.restena.lu...)
Analysis
Hierarchy
cpos.educ.lu is a subdomain of educ.lu.
Name Servers
educ.lu is served by three name servers: ns1.restena.lu, ns2.restena.lu and ns3.restena.lu.
The name servers of educ.lu overlap at least partially with those of other domains — among them euroguidance.lu, 10.64.158.in-addr.arpa, restena.lu and two more.
These name servers commonly co-occur with the name servers ns1.cgie.lu, ns2.cgie.lu, nse.restena.lu and nsp.restena.lu.
The hostnames ns1.restena.lu, ns2.restena.lu and ns3.restena.lu each direct to two IP addresses — ns1.restena.lu to 158.64.1.23 and 2001:a18:1::23, ns2.restena.lu to 91.92.119.210 and 2a04:c46:e00:e7a1:477:a6ff:fe00:afb, and ns3.restena.lu to 158.64.12.45 and 2001:a18:6:2::45.
Mail Servers
educ.lu uses two mail servers, smtpgate1.restena.lu and smtpgate2.restena.lu.
The mail server setup of educ.lu matches that of other domains such as cpos.educ.lu, fjsl.lu, ill.lu and two others.
At least some of the mail servers used by educ.lu are shared with other domains: worldskills.lu, cnel.lu, education.lu and two others among them.
These mail servers tend to be used in conjunction with the mail servers smtpgate3.restena.lu.
smtpgate1.restena.lu resolves to 158.64.1.58 and 2001:a18:1::58. Likewise, smtpgate2.restena.lu resolves to 158.64.1.59 and 2001:a18:1::59 — two IP addresses apiece.