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IPv4 Addresses

Overview

The 32-bit address space used on the IPv4 Internet has been almost completely exhausted. As a result, it has not been possible for Personal Telco to obtain more than a handful of global-scope IPv4 addresses at a time.

Since we are unable to use global-scope IPv4 address space on our public networks, we are forced to use private IPv4 address space (as defined in RFC 1918) along with cone NAT to provide limited IPv4 Internet connectivity.

We use only subnets within the 10.11/16 range; this page is the authoritative list of these allocations. If you are involved in the operation of a public network in the Portland metropolitan area, you are welcome to use this address space as well. See the Guidelines section below for details.

Note that IPv6 does not suffer from such a shortage of address space or any of the related issues; global-scope IPv6 addresses and subnets are easily obtained. See IPv6 for more information.

History

Many years ago, FreeNetworks set up a wiki page which was intended to coordinate the usage of private address space among community networks. Each organization could list the blocks they were using. The idea was that eventually some of these networks might somehow be connected together to form a larger network; by using the registry, they could reasonably expect that inter-community address conflicts would be virtually eliminated.

Almost immediately after they set this page up, we participated by listing our usage of the 10.11/16 block. Years later, it is no longer clear whether we started using this block before or after listing it in the registry; if anyone is able to clarify this point, please do.

The FreeNetworks wiki page which held the registry was named "NetworkAddressAllocations"; this page is named after it. Sadly, that wiki seems to have completely disappeared, and along with it went our best chance at establishing IPv4 connectivity with other distant community networks. Nevertheless, we are still using 10.11/16 and will likely continue doing so indefinitely.

Guidelines

If you are using (or planning to use) a subnet in the 10.11/16 block, and are interested in avoiding conflicts with other networks, you should document your allocation by adding it to the list in the Subnets section below.

Please do your best to avoid conflicting or overlapping allocations, and try to keep the list in numeric order by subnet. If in doubt, just ask around on the MailingLists, IRC or whatever you prefer.

We also ask that you use the smallest possible subnet that will meet your needs; the following table is provided to help you make that decision. You can make a selection based on either the recommendations given in the notes (the right column) or the number of addresses which will be available on your network (the left column). The bitmask and netmask in the center columns of the row you select should then be used in your configuration.

Addresses

CIDR bitmask

Dotted-quad netmask

Notes

2

/30

255.255.255.252

smallest possible; point-to-point

6

/29

255.255.255.248

14

/28

255.255.255.240

for most residences

30

/27

255.255.255.224

for normal nodes

62

/26

255.255.255.192

for very busy nodes

126

/25

255.255.255.128

for nodes with several APs

254

/24

255.255.255.0

510

/23

255.255.254.0

for entire neighborhoods

1022

/22

255.255.252.0

not recommended

A web-based calculator tool is also available: http://www.subnet-calculator.com/cidr.php

Subnets

Node

Network (CIDR)

NodeRedWing

10.11.0.0/26

NodeRerun

10.11.0.64/26

NodeSlabtown

10.11.0.128/26

Backspace Node563

10.11.0.192/26

NodeCedarHillsCrossing

10.11.1.0/24

NodeBasementPub

10.11.2.0/26

NodeCrowBar

10.11.2.64/26

NodeSoapbox

10.11.2.128/26

NodeLuckyLabSW

10.11.2.192/26

NodeRedAndBlack

10.11.3.1/26

NodeUglyMug

10.11.3.64/26

NodeHotPepper

10.11.3.128/26

Reserved for CoreServer use

10.11.4.0/24

NodeIntegrity

10.11.5.0/26

NodeCoffeeHouseFive

10.11.5.64/26

NodePixelFace

10.11.5.128/26

NodePeteForsyth

10.11.5.192/26

NodeAnnaBannanas

10.11.6.0/26

NodePowellsBooks

10.11.6.64/26

NodeGoldrush

10.11.6.128/26

NodeGoggles

10.11.6.192/26

NodeDittos

10.11.7.0/26

NodeOldTownPizza

10.11.7.64/26

NodeFreshPot

10.11.7.192/26

Jeanne Manor

10.11.8.128/26

NodeBubbleBubble

10.11.8.192/26

Little River Cafe

10.11.9.0/26

NodeBuffaloGap

10.11.9.64/26

NodeLuckyLab

10.11.9.192/26

NodeRodneyAndSkidmore

10.11.10.0/26

NodeVeganopolis

10.11.10.128/26

NodeMashTun

10.11.10.192/26

NodePioneerSquare

10.11.12.0/24

NodeShack

10.11.13.0/24

NodeOaktree

10.11.15.0/24

NE 6th Node144

10.11.18.0/24

NodeUrbanGrind

10.11.19.0/24

Ironwood Loop (Tigard) Node476

10.11.20.0/24

NodeTB

10.11.23.0/26

NodeTB151

10.11.23.64/26

NodeStaccatoGelato

10.11.23.192/26

NodeLuckyLabNW

10.11.24.0/26

WSMF NodeWSMF

10.11.25.0/24

616 NE Fargo #1

10.11.26.0/24

616 NE Fargo #2

10.11.27.0/24

Irving Park

10.11.28.0/24

The Coffee Plant Node518

10.11.30.0/24

PGE Park Node512

10.11.31.0/24

NodeWorldCup

10.11.33.0/24

Blubird58

10.11.34.0/24

Musashi Node539

10.11.35.0/24

NodeLabarre

10.11.36.0/24

NodeEcotrust

10.11.38.0/24

217 & I5, Tigard

10.11.40.0/24

NodeYukonTavern

10.11.41.0/26

NodeAnnaBannanasStJohns

10.11.42.128/26

West Linn

10.11.42.192/26

NodeNorthstar

10.11.43.64/26

NodeCrema

10.11.45.0/24

NodeOpenSourcery

10.11.46.0/24

NodeUrbanGrindNW

10.11.47.0/24

NodeCaffeUno Node624

10.11.50.0/24

NW Westover Towers Node625

10.11.51.0/24

SW Churchills Node626

10.11.52.0/24

NodePowellsTech

10.11.53.0/24

PublicDomain/Gnu Kiosk Network

10.11.54.0/24

SE Lincoln Node646

10.11.55.0/26

Rackm0unt Industries Node616

10.11.56.0/24

NW Bethany

10.11.57.0/26

NW Clean Gear

10.11.59.0/26

Billy Rays BillyRays

10.11.59.64/26

TheGladstoneCoffee

10.11.59.128/26

NE 27th and Ainsworth

10.11.60.0/24

NodeFirstUnitarian

10.11.61.0/24

NodeHollywood

10.11.62.0/25

NodeCommunitecture

10.11.62.128/25

NodeBeaterville

10.11.70.0/24

NodeKlickitat

10.11.80.0/22

NodeHawthorne

10.11.100.0/22

NodeMississippi

10.11.104.0/22

NW Everett/Old Town drunkhobo.org Node596

10.11.110.0/24

ISPGuy Node570

10.11.111.0/24

Mt. Scott Park Node114

10.11.114.0/24

Arbor Lodge Node134

10.11.134.0/24

VPNTesting for remote laptop connections

10.11.135.0/24

SE Woodstock & 69th Node172

10.11.172.0/24

Reserved for PersonalTelcoVPN use

10.11.255.0/24


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NetworkAddressAllocations (last edited 2014-02-21 20:58:45 by RussellSenior)