docker.blue - robtex.com
docker.blue
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.21.48.202🇳🇱 FUSIX-AS185.21.48.0/24 | ||||||
| NS | nsa.perf1.fr ⭐ | ||||||
| A | 2a01:c8:100::100🇫🇷 NAMESHIELD2a01:c8:100::/40 ANYCAST1-1 | ||||||
| PTR | nsa.perf1.fr | ||||||
| A | 81.92.94.100🇫🇷 NAMESHIELD81.92.94.0/23 ANYCAST1-1 | ||||||
| PTR | nsa.perf1.fr | ||||||
| NS | nsb.perf1.com | ||||||
| A | 2a01:c8:101::100🇫🇷 NAMESHIELD2a01:c8:100::/40 ANYCAST1-1 | ||||||
| PTR | nsb.perf1.com | ||||||
| A | 81.92.95.100🇫🇷 NAMESHIELD81.92.94.0/23 ANYCAST1-1 | ||||||
| PTR | nsb.perf1.com | ||||||
| NS | nsc.perf1.com | ||||||
| A | 2a09:35c0:102::100🇫🇷 NAMESHIELDGRP2a09:35c0:100::/40 NAMESHIELD ANYCAST1-2 | ||||||
| PTR | nsc.perf1.com | ||||||
| A | 152.89.172.100🇫🇷 NAMESHIELDGRP152.89.172.0/23 NAMESHIELD ANYCAST1-2 | ||||||
| PTR | nsc.perf1.com | ||||||
| SOA | nsa.perf1.frtechnical@nameshield.net 2023-08-15 #2 | ||||||
blue
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.blue ⭐ | ||||||
| NS | a2.nic.blue | ||||||
| NS | b0.nic.blue | ||||||
| NS | b2.nic.blue | ||||||
| NS | c0.nic.blue | ||||||
| SOA | a0.nic.bluehostmaster@donuts.email serial=1778333833 | ||||||
Same first word
Similar names
DNS History
9 records (4 active, 5 former)
○NSns2.observatoiredesmarques.fr2016-12-10 → 2018-06-06 · 4 obs
● 2018-06-06 22:13:48
○ 2026-02-24 14:29:20
○ 2026-05-09 14:04:14
○NSns3.nameshield.net2016-12-10 → 2018-06-06 · 4 obs
● 2018-06-06 22:13:48
○ 2026-02-24 14:29:20
○ 2026-05-09 14:04:14
●NSnsa.perf1.fr2026-02-24 → 2026-05-09 · 3 obs
● 2026-02-24 14:29:20
● 2026-05-09 14:04:14
●NSnsb.perf1.com2026-02-24 → 2026-05-09 · 3 obs
● 2026-02-24 14:29:20
● 2026-05-09 14:04:14
●NSnsc.perf1.com2026-02-24 → 2026-05-09 · 3 obs
● 2026-02-24 14:29:20
● 2026-05-09 14:04:14
○NSobs.ns1.fr2016-12-10 → 2018-06-06 · 4 obs
● 2018-06-06 22:13:48
○ 2026-02-24 14:29:20
○ 2026-05-09 14:04:14
○MXmx3.nameshield.com2016-12-10 → 2018-06-06 · 4 obs
● 2018-06-06 22:13:48
○ 2026-02-24 14:29:20
○ 2026-05-09 14:04:14
○MXmx4.nameshield.net2016-12-10 → 2018-06-06 · 4 obs
● 2018-06-06 22:13:48
○ 2026-02-24 14:29:20
○ 2026-05-09 14:04:14
●A185.21.48.2022026-02-24 → 2026-05-09 · 2 obs
● 2026-05-09 14:04:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| blue | a0.nic.blue, a2.nic.blue, b0.nic.blue, b2.nic.blue... | 10 records |
| docker.blue | nsb.perf1.com, nsc.perf1.com, nsa.perf1.fr | - |
✅ Authoritative Response
Server:152.89.172.100
NS records: nsb.perf1.com, nsc.perf1.com, nsa.perf1.fr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for docker.blue (unsigned zone)
⏱️ Timing
Total: 468ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.21.48.202 |
| NS | 3 | nsa.perf1.fr, nsc.perf1.com... |
| SOA | 1 | nsa.perf1.fr technical.nameshield.net |
📌 Glue Records Collected
Total: 10
In-bailiwick: 10 (a0.nic.blue, a0.nic.blue, a2.nic.blue...)
Analysis
IP Addresses
docker.blue resolves to one IP number: 185.21.48.202.
Name Servers
docker.blue is delegated to three name servers nsb.perf1.com, nsc.perf1.com and nsa.perf1.fr.
docker.blue at least partially shares name servers with other domains, for instance rowenta.at, mustela.com.cy, canalbox-reunion.com, ambafrance-sr.org and 249.126.143.in-addr.arpa.
These name servers are commonly used alongside ns0.infravesi.com, ns1.infravesi.com, a.ns.developpement-durable.gouv.fr, b.ns.developpement-durable.gouv.fr, nsz.perf1.com and nsz.perf1.fr.
Host names with two IP numbers:
nsb.perf1.com points to: 2a01:c8:101::100 and 81.92.95.100.
nsc.perf1.com points to: 2a09:35c0:102::100 and 152.89.172.100.
nsa.perf1.fr points to: 2a01:c8:100::100 and 81.92.94.100.