ipThe four-number format
IPv4 addresses are written as four numbers separated by dots. Each part ranges from 0 to 255. For example, 192.0.2.10 has a valid format; 192.0.2.300 does not. Valid syntax does not mean an address is publicly usable or currently assigned to a device.
Address, port, and network prefix
In 192.0.2.10:443, 443 is a port number. By contrast, 192.0.2.0/24 describes a network block. Enter only the address into a single-IP lookup field, removing https://, a trailing port, or /24. This gives the tool an address rather than a URL or network prefix.
Limits of examples
192.0.2.0/24 is reserved for documentation examples, so do not expect a real city result for the example address. To inspect your connection, use the public IP shown by the site. A private network address producing no map result is not necessarily an application fault.
Cleaning an address list
If a log contains https://192.0.2.10:443/, extract 192.0.2.10 for an IP lookup. Compare it with 192.0.2.300: the first has valid syntax, while the second exceeds the 255 limit. The valid example still should not produce a real location because it is documentation space. This separates syntax errors from unavailable location data.
Further reading
IPv4 documentation blocks — RFC 5737 ↗Put it into practice
Inspect one public IP, or compare a list of addresses with the bulk lookup tool. Location results are approximate.
Single lookup ↗ Bulk lookup ↗