b.root.lu - robtex.com
b.root.lu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:608::4🇱🇺 ROOT2a01:608::/32 root SA | ||||||
| PTR | b.root.lu | ||||||
| A | 83.243.8.3🇱🇺 ROOT83.243.8.0/21 root SA | ||||||
root.lu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:608::200🇱🇺 ROOT2a01:608::/32 root SA | ||||||
| A | 195.26.5.100🇱🇺 ROOT195.26.4.0/23 root SA | ||||||
| NS | a.root.lu ⭐ | ||||||
| NS | b.root.lu | ||||||
| NS | c.root.lu | ||||||
| MX | in.mx.root.lu ⭐ | ||||||
| TXT | google-site-verification=vVAX-EejoddQ-0UvZiFViEvtN_X5ePrngiy67nTv0Ow | ||||||
| TXT | v=spf1 ip4:195.26.4.0/23 ip4:195.24.72.0/21 ip4:83.243.8.0/21 ip4:212.117.160... | ||||||
| TXT | Ma3-YG7-99k | ||||||
| TXT | MS=6B463D7C9120BC49074EE4782972FB613BC53C76 | ||||||
| TXT | knowbe4-site-verification=3eded9e9ea0f63c7a18c1b928f7bee6a | ||||||
| SOA | a.root.luadmin@root.lu serial=3880058 | ||||||
rank #877025 globally
rank #244 in the tld
WOT: SUSPICIOUS (47/100)
📈 Tranco rank: #42,043
PTR for
NS for
Previously NS for
Subdomains
cache.b.root.lu |
Same first word
Similar names
DNS History
2 records (2 active, 0 former)
●A2a01:608::42015-08-22 → 2026-08-16 · 2 obs
● 2026-08-16 07:05:52
●A83.243.8.32015-08-22 → 2026-08-16 · 2 obs
● 2026-08-16 07:05:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| lu | 1.ns.lu, i.dns.lu, g.dns.lu, r.ns.lu... | 14 records |
| root.lu | c.root.lu, a.root.lu, b.root.lu | 5 records |
✅ Authoritative Response
Server:195.24.72.3
NS records: c.root.lu, a.root.lu, b.root.lu
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for root.lu (unsigned zone)
⏱️ Timing
Total: 485ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 83.243.8.3 |
| AAAA | 1 | 2a01:608::4 |
📌 Glue Records Collected
Total: 19
In-bailiwick: 19 (1.ns.lu, g.dns.lu, i.dns.lu...)
Analysis
Hierarchy
b.root.lu is a parent domain of cache.b.root.lu.
Name Server Role
Among the domains delegated to b.root.lu as a name server are 8.243.83.in-addr.arpa, 10.243.83.in-addr.arpa, 78.24.195.in-addr.arpa, 7.2.3.7.8.0.6.0.1.0.a.2.ip6.arpa, 12.243.83.in-addr.arpa and a handful of others.
a.root.lu and c.root.lu frequently appear as name servers alongside b.root.lu.
IP Addresses
b.root.lu resolves to the IP addresses 83.243.8.3 and 2a01:608::4
ns2.root.lu, ns1.assandra.com, b.voipmix.com plus two other host names have IP numbers in common with b.root.lu.