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npm · #1949 most downloaded on npm
Parse and lookup IP network blocks
Last release 5 months ago
08 Apr 2026
Release timing varies
gaps range from 9 days to 5.0 years
Some releases are documented
notes for 4 of 12 stable releases
Nothing withdrawn
no release was ever pulled
14 years old
12 releases · first in 2012
Nothing published for this version
Nothing published for this version
Fix 08 parsed as decimal while 018 rejected. (commit)
08 parsed as decimal while 018 rejected. (commit)One column per quarter.
> This version contains an important security fix. If you are using netmask <=2.0.0, please upgrade to 2.0.1 or above.
This version contains an important security fix. If you are using netmask
<=2.0.0, please upgrade to2.0.1or above.
parseInt()(commit)
Previous API was treating IPs with less than for bytes as IP with a netmask of the size of the provided bytes (1=8, 2=16, 3=24) and was interpreting t
Previous API was treating IPs with less than for bytes as IP with a
netmask of the size of the provided bytes (1=8, 2=16, 3=24) and was
interpreting the IP as if it was completed with 0s on the right side.
Propre IP parsing for these is to consider missing bytes as being 0s on
the left side.
Mask size is no longer infered by the number of bytes provided.
Previous API was treating IPs with less than four bytes as IP with a netmask of the size of the provided bytes (1=8, 2=16, 3=24) and was interpreting the IP as if it was completed with 0s on the right side.
Proper IP parsing for these is to consider missing bytes as being 0s on the left side.
Mask size is no longer infered by the number of bytes provided.
This means that the input 216.240 will no longer be interpreted as 216.240.0.0/16, but as 0.0.216.240/32,
as per convention.
See the change.
Changes before this release are not documented here. Please see the commit list or the compare view.
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
Nothing published for this version
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