Here are the clauses we categorized as “Can’t be a customer.”

The variety here seems to be

1. A)You can’t be a current customer
   

2. B)You can’t have been a customer in the past ___ months.
   

3. C)You can’t be a customer of a customer.
   

Excerpts from Can’t Be a Customer Polices

Under no circumstances will Speakeasy maintain both a transit and peering relationship with a given network simultaneously. – Speakeasy

1.2.5 Existing IP Transit Customers of AboveNet are not eligible for peering. – AboveNet

The interconnection partner must not currently be or have been an IP transit customer of Internap in the recent past.

Under no circumstances shall the interconnection partner be a simultaneous peer and transit customer.

tw telecom does not peer with any network that is also a tw telecom transit customer.

RCN will not peer with any network that has been an IP transit   customer within the past nine (9) months.

In order to qualify for settlement-free peering, the interconnecting partner may not have been a WBS Connect IP transit customer in the past six months. This applies to ASN 19080 or any other resold transit purchased from WBS Connect. – wbsconnect

# Potential peers may not have been an Mzima IP transit customer during the previous 12 months. – Mzima

Applicant or Applicants's entities must not have any transit or peering relationship with Tinet or any other

Tinet entity or have had such a relationship in the 6 months prior to application. – tinet

# Existing transit customers cannot be peers in the same region. – LambdaNet

# Not have been a New Edge Networks IP customer within the past (6) six months. – NewEdge

Potential peer must not be, or have been, an IP customer of Lightpath.net, or any busines grade IP    service, within 6 months of requesting a settlement-free peer. –Cablevision

Under no circumstances shall the interconnection partner be a simultaneous peer and transit customer. – WVFiber

Generally, AS19151 does not peer with downstream transit customers of existing peering partners but this may be evaluated on a case-by-case basis. – WVFiber

A network (ASN) that is a customer of an AT&T US network for any dedicated IP services may not simultaneously be a settlement-free peer of that same network. – AT&T

A network (ASN) that is a customer of a Comcast network for any dedicated IP services may not simultaneously be a settlement-free network peer. – Comcast

A network (ASN) that is a BGP transit customer of OpenAccess or a partner network for any dedicated IP services may not simultaneously be a settlement-free peer of that same network. – OpenAccess

The following is part of a study of Peering Policy Clauses found in the Peering Rules of the Road - A Brief Study of 28 Peering Policies.  Clauses were categorized and put into rough categories for comparison.