[arin-tech-discuss] Erroneous "IP range overlaps with existing network(s)." errors

David Huberman dhuberma at arin.net
Tue Feb 19 13:24:13 EST 2013

Hi Tim,

Thank you very much for your report. ARIN has corrected the issue, and all
your calls should now be working properly.  The problem was an artifact of
a new software deployment performed Saturday morning.  There were no
adverse affects for the data in our registration system.


David R Huberman
Principal Technical Analyst, ARIN

On 2/19/13 10:32 AM, "Tim Garrison" <tgarrison at softlayer.com> wrote:

For the last 3 days, any attempt to reassign a subnet with the RESTful API
results in the following error:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<error xmlns="http://www.arin.net/regrws/core/v1">
            <message>IP range overlaps with existing network(s).</message>
    <message>Payload entity failed to validate; see component messages for
The subnet in question here is I have verified that
there are no other subnet registrations in the adjacent space
( was analyzed and found to contain
 only subnets in ³Direct Allocation².
My sample reassign payload is as follows:
<?xml version="1.0"?>
<net xmlns="http://www.arin.net/regrws/core/v1">
Has anything changed recently that would be causing this error? Is there
some other underlying issue causing this?
Tim Garrison
Software Engineer II
tgarrison at softlayer.com
281.714.4213   direct
713.540.4325   cell
866.398.7638   toll-free
281.714.4657   fax

SoftLayer Technologies, Inc.
315 Capitol Street
Suite 205
Houston, TX 77002

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