sys-admin.net - robtex.com
sys-admin.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 20.217.52.1🇮🇱 Microsoft20.192.0.0/10 | ||||||
| A | 20.217.52.3🇮🇱 Microsoft20.192.0.0/10 | ||||||
| NS | ns1-04.azure-dns.com ⭐ | ||||||
| A | 2603:1061:0:700::4🇺🇸 Microsoft2603:1000::/25 MICROSOFT | ||||||
| PTR | ns1-04.azure-dns.com | ||||||
| A | 13.107.236.4🇺🇸 Microsoft13.104.0.0/14 MICROSOFT | ||||||
| PTR | ns1-04.azure-dns.com | ||||||
| NS | ns2-04.azure-dns.net | ||||||
| A | 2620:1ec:8ec:700::4🇺🇸 Microsoft2620:1ec::/36 MICROSOFT | ||||||
| PTR | ns2-04.azure-dns.net | ||||||
| A | 150.171.21.4🇺🇸 Microsoft150.171.0.0/16 MICROSOFT | ||||||
| PTR | ns2-04.azure-dns.net | ||||||
| NS | ns3-04.azure-dns.org | ||||||
| A | 2a01:111:4000:700::4🇬🇧 Microsoft2a01:111:4000::/36 | ||||||
| PTR | ns3-04.azure-dns.org | ||||||
| A | 204.14.183.4🇺🇸 Microsoft204.14.180.0/22 | ||||||
| PTR | ns3-04.azure-dns.org | ||||||
| NS | ns4-04.azure-dns.info | ||||||
| A | 2620:1ec:bda:700::4🇺🇸 Microsoft2620:1ec::/36 MICROSOFT | ||||||
| PTR | ns4-04.azure-dns.info | ||||||
| A | 208.84.5.4🇺🇸 Microsoft208.84.0.0/21 MICROSOFT | ||||||
| PTR | ns4-04.azure-dns.info | ||||||
| SOA | ns1-04.azure-dns.comazuredns-hostmaster@microsoft.com serial=1 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1786214499 | ||||||
Previously MX for
sys-admin.net |
Same first word
Similar names
DNS History
18 records (6 active, 12 former)
○NSjosh.ns.cloudflare.com2017-02-12 → 2017-02-12 · 4 obs
● 2017-02-12 18:44:58
○ 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
○NSlola.ns.cloudflare.com2017-02-12 → 2017-02-12 · 4 obs
● 2017-02-12 18:44:58
○ 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
●NSns1-04.azure-dns.com2026-04-27 → 2026-08-08 · 3 obs
● 2026-04-27 12:40:44
● 2026-08-08 19:01:36
○NSns1.hostmonster.com2015-07-04 → 2015-07-04 · 3 obs
○ 2017-02-12 18:44:58
○ 2026-08-08 19:01:36
●NSns2-04.azure-dns.net2026-04-27 → 2026-08-08 · 3 obs
● 2026-04-27 12:40:44
● 2026-08-08 19:01:36
○NSns2.hostmonster.com2015-07-04 → 2015-07-04 · 3 obs
○ 2017-02-12 18:44:58
○ 2026-08-08 19:01:36
●NSns3-04.azure-dns.org2026-04-27 → 2026-08-08 · 3 obs
● 2026-04-27 12:40:44
● 2026-08-08 19:01:36
●NSns4-04.azure-dns.info2026-04-27 → 2026-08-08 · 3 obs
● 2026-04-27 12:40:44
● 2026-08-08 19:01:36
○MXsys-admin.net2015-07-04 → 2015-07-04 · 3 obs
○ 2017-02-12 18:44:58
○ 2026-08-08 19:01:36
○A104.18.48.1682017-02-12 → 2017-02-12 · 4 obs
● 2017-02-12 18:44:58
○ 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
○A104.18.49.1682017-02-12 → 2017-02-12 · 4 obs
● 2017-02-12 18:44:58
○ 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
○A20.217.184.12026-04-27 → 2026-04-27 · 3 obs
● 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
●A20.217.52.12026-08-08 → 2026-08-08 · 2 obs
● 2026-08-08 19:01:36
●A20.217.52.32026-08-08 → 2026-08-08 · 2 obs
● 2026-08-08 19:01:36
○A2400:cb00:2048:1::6812:30a82017-02-12 → 2017-02-12 · 4 obs
● 2017-02-12 18:44:58
○ 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
○A2400:cb00:2048:1::6812:31a82017-02-12 → 2017-02-12 · 4 obs
● 2017-02-12 18:44:58
○ 2026-04-27 12:40:44
○ 2026-08-08 19:01:36
○A74.220.199.82015-11-17 → 2016-06-21 · 5 obs
● 2015-11-17 10:01:58
● 2016-06-21 08:29:14
○ 2017-02-12 18:44:58
○ 2026-08-08 19:01:36
○A74.220.207.1112015-07-04 → 2015-07-04 · 3 obs
○ 2015-11-17 10:01:58
○ 2026-08-08 19:01:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | d.gtld-servers.net, i.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net... | - |
| sys-admin.net | ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info | 2 records |
✅ Authoritative Response
Server:13.107.236.4
NS records: ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sys-admin.net (unsigned zone)
⏱️ Timing
Total: 413ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 20.217.52.1, 20.217.52.3 |
| NS | 4 | ns1-04.azure-dns.com, ns2-04.azure-dns.net... |
| SOA | 1 | ns1-04.azure-dns.com azuredns-hostmaster |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2-04.azure-dns.net, ns2-04.azure-dns.net)
Analysis
IP Addresses
sys-admin.net points to the IP addresses 20.217.52.1 and 20.217.52.3
Among the host names that share IP numbers with sys-admin.net are kpmg.co.il, drvig.com, waws-prod-ilc-001-prod.israelcentral.cloudapp.azure.com and two others.
Name Servers
The domain sys-admin.net is delegated to these four name servers: ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org.
There is at least partial name server overlap between sys-admin.net and other domains — e-vision.cl, indianapolismicrosofttraining.net, noun3d.org and two more among them.
All four hostnames — ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org — resolve to two IP numbers apiece: ns1-04.azure-dns.com to 13.107.236.4 and 2603:1061:0:700::4; ns4-04.azure-dns.info to 208.84.5.4 and 2620:1ec:bda:700::4; ns2-04.azure-dns.net to 150.171.21.4 and 2620:1ec:8ec:700::4; ns3-04.azure-dns.org to 204.14.183.4 and 2a01:111:4000:700::4.