sim4sys.com - robtex.com
sim4sys.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 15.188.54.194🇫🇷 Amazon15.188.0.0/16 EC2 CDG prefix | ||||||
| PTR | ec2-15-188-54-194.eu-west-3.compute.amazonaws.com | ||||||
| NS | ns-1607.awsdns-08.co.uk ⭐ | ||||||
| A | 2600:9000:5306:4700::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1607.awsdns-08.co.uk | ||||||
| A | 205.251.198.71🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1607.awsdns-08.co.uk | ||||||
| NS | ns-1054.awsdns-03.org | ||||||
| A | 2600:9000:5304:1e00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1054.awsdns-03.org | ||||||
| A | 205.251.196.30🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1054.awsdns-03.org | ||||||
| NS | ns-473.awsdns-59.com | ||||||
| A | 2600:9000:5301:d900::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-473.awsdns-59.com | ||||||
| A | 205.251.193.217🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| NS | ns-635.awsdns-15.net | ||||||
| A | 2600:9000:5302:7b00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-635.awsdns-15.net | ||||||
| A | 205.251.194.123🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-635.awsdns-15.net | ||||||
| SOA | ns-1607.awsdns-08.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
com
| 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=1794694701 | ||||||
Same first word
sim4sys.com |
Previous names
Next names
DNS History
6 records (5 active, 1 former)
●NSns-1054.awsdns-03.org2019-04-08 → 2026-11-14 · 2 obs
● 2026-11-14 23:00:22
●NSns-1607.awsdns-08.co.uk2019-04-08 → 2026-11-14 · 2 obs
● 2026-11-14 23:00:22
●NSns-473.awsdns-59.com2019-04-08 → 2026-11-14 · 2 obs
● 2026-11-14 23:00:22
●NSns-635.awsdns-15.net2019-04-08 → 2026-11-14 · 2 obs
● 2026-11-14 23:00:22
●A15.188.54.1942026-08-21 → 2026-11-14 · 3 obs
● 2026-08-21 18:34:38
● 2026-11-14 23:00:22
○A35.181.45.12019-04-08 → 2019-04-08 · 3 obs
○ 2026-08-21 18:34:38
○ 2026-11-14 23:00:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| sim4sys.com | ns-635.awsdns-15.net, ns-473.awsdns-59.com, ns-1607.awsdns-08.co.uk, ns-1054.awsdns-03.org | 2 records |
✅ Authoritative Response
Server:205.251.196.30
NS records: ns-635.awsdns-15.net, ns-473.awsdns-59.com, ns-1607.awsdns-08.co.uk, ns-1054.awsdns-03.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sim4sys.com (unsigned zone)
⏱️ Timing
Total: 447ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 15.188.54.194 |
| NS | 4 | ns-1054.awsdns-03.org, ns-1607.awsdns-08.co.uk... |
| SOA | 1 | ns-1607.awsdns-08.co.uk awsdns-hostmaste |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-473.awsdns-59.com, ns-473.awsdns-59.com)
Analysis
IP Addresses
sim4sys.com has exactly one IP address — 15.188.54.194.
Name Servers
Four name servers handle the delegation for sim4sys.com: ns-473.awsdns-59.com, ns-635.awsdns-15.net, ns-1054.awsdns-03.org and ns-1607.awsdns-08.co.uk.
sim4sys.com shares at least some of its name servers with other domains, including shoryo.ed.jp, athenacap.com.br, maklerakte.de and two others.
These name servers are frequently seen alongside the name servers ns-260.awsdns-32.com.
The host names ns-473.awsdns-59.com, ns-635.awsdns-15.net, ns-1054.awsdns-03.org and ns-1607.awsdns-08.co.uk each resolve to two IP addresses: ns-473.awsdns-59.com resolves to 205.251.193.217 and 2600:9000:5301:d900::1; ns-635.awsdns-15.net resolves to 205.251.194.123 and 2600:9000:5302:7b00::1; ns-1054.awsdns-03.org resolves to 205.251.196.30 and 2600:9000:5304:1e00::1; ns-1607.awsdns-08.co.uk resolves to 205.251.198.71 and 2600:9000:5306:4700::1.