Docs IP Ranges Pricing Status

Log in Start for free

All IP Ranges
›/8
›/16
›173.81.0.0/17

Summary

ASN	AS19108 Optimum
BGP	173.81.0.0/17
Registry	ARIN
Country	US
Status	assigned
IP Version	IPv4
Allocated	2008-11-11
Last Updated	2026-08-26

Geolocation, routing, registry and threat data for any IP address, assembled from open sources and served as one JSON body.

API

API reference
Output formats
Bulk lookups
AS number lookups
Errors

Data

IP ranges
Dataset status
Network Scanning
Response fields

Tools

All free tools
What is my IP
Subnet calculator
IP to number
CIDR converter
Reverse DNS lookup

Account

Pricing
Create an account
Log in
Contact us

© 2026 ip-api.dev