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The reassignments registries never see.

Network operators publish the blocks they hand to their own customers on RWHOIS servers of their own. Every reassignment those servers return is here, with the customer, its contacts and address, and the block it was carved from.

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Schema at a glance.

See documentation →

The database's schema and metadata are documented carefully. It is published as CSVGZ and MMDB.

start_ipend_ipidnamecitycountryabusehost
23.227.192.19223.227.192.223NET-126051.23.227.192.192/27HIVELOCITY, LLCChicagoUSabuse@hivelocity.netrwhois.hivelocity.net
38.32.15.12838.32.15.135NET4-26200F801DAllata LLCDALLASUSrwhois.cogentco.com
38.87.81.3238.87.81.47NET4-265751201CSoletanche FreyssinetASHBURNUSrwhois.cogentco.com
38.88.216.11638.88.216.117NET4-2658D8741FManatt, Phelps, & Phillips, LLP.COSTA MESAUSrwhois.cogentco.com
216.231.141.0216.231.141.127NET-437.216.231.141.0/25Nexeon Technologies, IncStaffordUSabuse@sbaedge.commy.603.sbaedge.net
ID
ip_rwhois_v1
Entries
177,585
Refresh
Weekly
CSVGZ
5.57 MB
MMDB
10.42 MB

Downloading it from code.

Database API reference →

One call gets you the current IP RWHOIS build. Every official client wraps it three ways: straight to disk, a time-limited link you hand to your own runner, or bytes in memory. A file written to disk lands only once the whole transfer has arrived, and checksums() returns the published digests to verify it against.

download()
Streams the current build to a file, which lands only once the whole transfer has arrived, so a failed one never leaves a truncated file behind.
downloadUrl()
The time-limited link the API redirects to, for your own downloader, a job runner or a CDN pull.
downloadBytes()
The build in memory, for a small database or a pipeline that never touches a filesystem.
metadata()
Row count, file sizes and when the build last updated. Poll it and fetch only when a new one has landed.
checksums()
The md5, sha1, sha256 and sha512 digests of one file, to verify it once it lands.
import os
from internetdata import InternetData
client = InternetData(os.environ["INTERNETDATA_API_KEY"])
# what is in today's build, without moving the file
meta = client.database.metadata("ip_rwhois_v1")
client.database.download("ip_rwhois_v1", "mmdb", "./ip_rwhois_v1.mmdb")
sums = client.database.checksums("ip_rwhois_v1", "mmdb")
print(meta.updated, meta.entries, sums["sha256"])
load.pypip install internetdata
Also available for .NET, Ruby, Rust, Swift, Erlang, Perl and Zig. See all on GitHub →

Getting your hands on it.

The file is the product. Teams join IP RWHOIS against traffic they already log, inside their own infrastructure, and never send an address anywhere to get an answer.

Customer attribution

See which of an operator's customers holds a block, where the registries name only the operator.

License the full database
Sales will quote on volume, term and whether you need redistribution rights.
Checksums published per file — md5, sha1, sha256 and sha512.
The id fixes the schema, so a new build never changes the columns your parser reads.
Samples are cut from the current build, not a synthetic extract.

An official client for every major language.

All SDKs on GitHub →

Twelve official clients for the languages you ship in, each wrapping the database endpoints — list what you are licensed for, poll a build, follow the download redirect, verify what landed. Install commands are in the docs.

On this page

How often does this database rebuild?

Daily, except IP RDNS and IP RWHOIS, which change weekly. The metadata call answers when the current build landed and how many rows it holds, before you fetch it.

00 · Evaluate

Test the real build first.

An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.

Request evaluation
01 · License

Then license what you use.

Standard, for detection and decisions inside your own product and operations.
Redistribution, when the data ships onward inside what you sell — priced by scope, not by seat.
Annual terms, a named contact, and flexible payment terms — monthly, quarterly or yearly.