Can IP geolocation for 1.203.0.239 locate an individual device?

No. IP geolocation reports an offline database registration for a network block, not an individual device’s live coordinates. IPv4 addresses contain 32 bits and IPv6 addresses contain 128; nearby network blocks commonly use /24 or /64 prefixes. Allocations and database updates can lag. The result does not confirm a home address, current user, or whether the device is online. Use the address classification and network calculations separately when location information is missing or incomplete.

How can I read the IP type and numeric forms for 1.203.0.239?

The address-properties row lists special-use classifications for 1.203.0.239 and shows normalized, decimal, hexadecimal, and binary forms. IPv4 uses 32 bits and IPv6 uses 128; hexadecimal byte notation uses 2 digits per byte. A public address does not prove that its device is online, and a private or reserved classification does not identify a person. Read these as properties of the address rather than as an active network test.

Why should I check an IP range when 1.203.0.239 includes a CIDR prefix?

The IP detail page notes when a supplied prefix was not used for a full network calculation; use the IP range tool to calculate an interval. Valid prefix lengths run from 0 to 32 for IPv4 and 0 to 128 for IPv6. This page still analyzes the individual address and may show its default neighboring block. Do not assume one address’s geolocation record describes every address in its CIDR range.

1.203.0.239 IP address lookup

1.203.0.239 is registered to 中国 · 北京市, ISP 电信. The result comes from the ip2region database bundled with this site and is rendered on the server.

Computed on this site’s server IPv4 Database 2026-08-28

IP location

Input address	1.203.0.239
Country or region	中国
Country code	CN
Province or state	北京市
City	北京市
ISP	电信
Data source	ip2region offline database
Database build date	2026-08-28

Address properties

IP version	IPv4
Canonical address	1.203.0.239
Address classification	Not in implemented special-use ranges; reachability not checked
Decimal	30081263
Hexadecimal	0x01cb00ef
Binary	00000001.11001011.00000000.11101111

Recently looked up

Open the IP lookup tool

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8.8.115.185	United States · Georgia	Level 3 Parent, LLC	2026-10-17 01:52
139.9.125.234	中国 · 上海市	华为	2026-10-17 01:52
1.203.0.239	中国 · 北京市	电信	2026-10-17 01:52
47.86.96.22	中国 · 香港特别行政区	阿里	2026-10-17 01:52
47.86.94.242	中国 · 香港特别行政区	阿里	2026-10-17 01:52
47.107.233.137	中国 · 广东省 · 深圳市	阿里	2026-10-17 01:52
223.87.233.244	中国 · 四川省 · 成都市	移动	2026-10-17 01:52
223.87.224.39	中国 · 四川省 · 资阳市	移动	2026-10-17 01:52
199.20.38.78	United States · Virginia · Ashburn	No record	2026-10-17 01:52
124.118.144.180	中国 · 新疆 · 喀什地区	电信	2026-10-17 01:52

Public addresses only, last 50 kept, with nothing identifying who looked them up.

About this address

1.203.0.239 is a IPv4 address. According to the ip2region database bundled with this site, its block is registered to 中国 · 北京市 with ISP 电信. The tables above also give the normalized form, the address classification and the decimal, hexadecimal and binary representations.

The location is read by this site's server from the ip2region XDB file shipped with the deployment, without calling a third-party API. The page is rendered server-side and does not depend on browser scripts.

How to read the result

The normalized form is the input rewritten in standard notation — IPv6 collapses runs of zero groups. Compare addresses in code using this form.
The classification lists which special-use ranges the address falls in (private, loopback, link-local, multicast and so on). No match means it is an ordinary routable address.
Decimal, hexadecimal and binary are the same address written differently, handy for storage and bitwise work. The IPv4 decimal is the usual 32-bit integer.
CIDR input additionally yields the mask, network address, broadcast address, host range and total address count — ready to paste into firewall or routing config.

Data source and limits

This page performs no ping, port scan or any other active probe, and says nothing about whether a host is online. Everything shown is derived from the address itself plus an offline database lookup. The ip2region data ships with the site, so it lags real allocation changes and some blocks have no record at all.

FAQ

Can IP geolocation for 1.203.0.239 locate an individual device?: No. IP geolocation reports an offline database registration for a network block, not an individual device’s live coordinates. IPv4 addresses contain 32 bits and IPv6 addresses contain 128; nearby network blocks commonly use /24 or /64 prefixes. Allocations and database updates can lag. The result does not confirm a home address, current user, or whether the device is online. Use the address classification and network calculations separately when location information is missing or incomplete.
How can I read the IP type and numeric forms for 1.203.0.239?: The address-properties row lists special-use classifications for 1.203.0.239 and shows normalized, decimal, hexadecimal, and binary forms. IPv4 uses 32 bits and IPv6 uses 128; hexadecimal byte notation uses 2 digits per byte. A public address does not prove that its device is online, and a private or reserved classification does not identify a person. Read these as properties of the address rather than as an active network test.
Why should I check an IP range when 1.203.0.239 includes a CIDR prefix?: The IP detail page notes when a supplied prefix was not used for a full network calculation; use the IP range tool to calculate an interval. Valid prefix lengths run from 0 to 32 for IPv4 and 0 to 128 for IPv6. This page still analyzes the individual address and may show its default neighboring block. Do not assume one address’s geolocation record describes every address in its CIDR range.