is4s.io - robtex.com
is4s.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 52.227.158.99🇺🇸 Microsoft52.224.0.0/11 MICROSOFT | ||||||
| NS | ns-1096.awsdns-09.org ⭐ | ||||||
| A | 2600:9000:5304:4800::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1096.awsdns-09.org | ||||||
| A | 205.251.196.72🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1096.awsdns-09.org | ||||||
| NS | ns-144.awsdns-18.com | ||||||
| A | 2600:9000:5300:9000::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-144.awsdns-18.com | ||||||
| A | 205.251.192.144🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-144.awsdns-18.com | ||||||
| NS | ns-1755.awsdns-27.co.uk | ||||||
| A | 2600:9000:5306:db00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1755.awsdns-27.co.uk | ||||||
| A | 205.251.198.219🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1755.awsdns-27.co.uk | ||||||
| NS | ns-562.awsdns-06.net | ||||||
| A | 2600:9000:5302:3200::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-562.awsdns-06.net | ||||||
| A | 205.251.194.50🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-562.awsdns-06.net | ||||||
| SOA | ns-1096.awsdns-09.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1774497969 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns-1096.awsdns-09.org2026-03-10 → 2026-03-26 · 2 obs
● 2026-03-26 04:18:22
●NSns-144.awsdns-18.com2026-03-10 → 2026-03-26 · 2 obs
● 2026-03-26 04:18:22
●NSns-1755.awsdns-27.co.uk2026-03-10 → 2026-03-26 · 2 obs
● 2026-03-26 04:18:22
●NSns-562.awsdns-06.net2026-03-10 → 2026-03-26 · 2 obs
● 2026-03-26 04:18:22
●A52.227.158.992026-03-10 → 2026-03-26 · 2 obs
● 2026-03-26 04:18:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | b0.nic.io, a0.nic.io, a2.nic.io, c0.nic.io | - |
| is4s.io | ns-1096.awsdns-09.org, ns-562.awsdns-06.net, ns-1755.awsdns-27.co.uk, ns-144.awsdns-18.com | - |
✅ Authoritative Response
Server:205.251.196.72
NS records: ns-1096.awsdns-09.org, ns-562.awsdns-06.net, ns-1755.awsdns-27.co.uk, ns-144.awsdns-18.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for is4s.io (unsigned zone)
⏱️ Timing
Total: 314ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 52.227.158.99 |
| NS | 4 | ns-1096.awsdns-09.org, ns-144.awsdns-18.com... |
| SOA | 1 | ns-1096.awsdns-09.org awsdns-hostmaster. |
Analysis
IP Addresses
is4s.io resolves to a single IP address: 52.227.158.99.
Name Servers
is4s.io is delegated to four name servers: ns-144.awsdns-18.com, ns-562.awsdns-06.net, ns-1096.awsdns-09.org and ns-1755.awsdns-27.co.uk.
is4s.io at least partially shares name servers with other domains, including train-mobileconnect.com, vclasshub.com, sbb-wzu.net, meicho.ac.jp and live.rezync.com.
These name servers are often used together with ns-281.awsdns-35.com.
Hosts with two IP numbers:
Host ns-144.awsdns-18.com points to 2600:9000:5300:9000::1 and 205.251.192.144
Host ns-562.awsdns-06.net points to 2600:9000:5302:3200::1 and 205.251.194.50
Host ns-1096.awsdns-09.org points to 2600:9000:5304:4800::1 and 205.251.196.72
Host ns-1755.awsdns-27.co.uk points to 2600:9000:5306:db00::1 and 205.251.198.219