Within
203.0.113.0/24
⚠
Reserved / special-use address
Documentation (203.0.113.0/24, TEST-NET-3) — reserved for use in examples, documentation, and tutorials. These addresses are not routable on the public Internet and are excluded from search-engine indexing.
ASN
—
No ASN data
Reverse DNS
—
No PTR record
Blocklisted
Checking…
Scanning blocklists
Network Allocation for 203.0.113.1
- CIDR range
- 203.0.113.0/24
- IP range (int)
- 3,405,803,776 — 3,405,804,031
- Prefix length
- /24
- Regional Internet Registry
- IANA
- Data source(s)
- iana_special
- Last updated
- 2026-04-16 09:08:02
Frequently Asked Questions
Who owns 203.0.113.1?
203.0.113.1 is allocated to an unknown organization.
What network is 203.0.113.1 on?
203.0.113.1 belongs to the 203.0.113.0/24 network block. This range contains 256 addresses.
Does 203.0.113.1 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
Related
Last updated: 2026-07-18 20:05:42 UTC
