sys-eng.net - robtex.com
sys-eng.net
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-448.awsdns-56.com ⭐ | ||||||
| A | 2600:9000:5301:c000::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-448.awsdns-56.com | ||||||
| A | 205.251.193.192🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-448.awsdns-56.com | ||||||
| NS | ns-1223.awsdns-24.org | ||||||
| A | 2600:9000:5304:c700::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1223.awsdns-24.org | ||||||
| A | 205.251.196.199🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1223.awsdns-24.org | ||||||
| NS | ns-1705.awsdns-21.co.uk | ||||||
| A | 2600:9000:5306:a900::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1705.awsdns-21.co.uk | ||||||
| A | 205.251.198.169🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1705.awsdns-21.co.uk | ||||||
| NS | ns-589.awsdns-09.net | ||||||
| A | 2600:9000:5302:4d00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-589.awsdns-09.net | ||||||
| A | 205.251.194.77🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-589.awsdns-09.net | ||||||
| SOA | ns-448.awsdns-56.comawsdns-hostmaster@amazon.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=1777081266 | ||||||
Subdomains
mail.sys-eng.net |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns-1223.awsdns-24.org2026-03-01 → 2026-04-25 · 2 obs
● 2026-04-25 01:56:08
●NSns-1705.awsdns-21.co.uk2026-03-01 → 2026-04-25 · 2 obs
● 2026-04-25 01:56:08
●NSns-448.awsdns-56.com2026-03-01 → 2026-04-25 · 2 obs
● 2026-04-25 01:56:08
●NSns-589.awsdns-09.net2026-03-01 → 2026-04-25 · 2 obs
● 2026-04-25 01:56:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| sys-eng.net | ns-589.awsdns-09.net, ns-448.awsdns-56.com, ns-1705.awsdns-21.co.uk, ns-1223.awsdns-24.org | 1 record |
✅ Authoritative Response
Server:205.251.194.77
NS records: ns-589.awsdns-09.net, ns-448.awsdns-56.com, ns-1705.awsdns-21.co.uk, ns-1223.awsdns-24.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sys-eng.net (unsigned zone)
⏱️ Timing
Total: 1799ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1223.awsdns-24.org, ns-1705.awsdns-21.co.uk... |
| SOA | 1 | ns-448.awsdns-56.com awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-589.awsdns-09.net)
Analysis
Hierarchy
The parent of mail.sys-eng.net is sys-eng.net.
Name Servers
sys-eng.net is delegated to four name servers: ns-448.awsdns-56.com, ns-589.awsdns-09.net, ns-1223.awsdns-24.org and ns-1705.awsdns-21.co.uk.
sys-eng.net shares name servers with other domains at least partially, for instance d3vks6dqpzf6oz.cloudfront.net, dev.turbotenant.com, revmaster360.com, promotethisvideo.com and fundsnational.com.
Host names with two IP numbers:
ns-448.awsdns-56.com resolves to 2600:9000:5301:c000::1 and 205.251.193.192.
ns-589.awsdns-09.net resolves to 2600:9000:5302:4d00::1 and 205.251.194.77.
ns-1223.awsdns-24.org resolves to 2600:9000:5304:c700::1 and 205.251.196.199.
ns-1705.awsdns-21.co.uk resolves to 2600:9000:5306:a900::1 and 205.251.198.169.