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

Here are the clauses we categorized as requirements for a Single AS for peering.

Excerpts from Peering Polices

Single AS

Applicant must operate the network as a single Autonomous Number (ASN) for its global backbone network. If the Applicants Internet Network uses multiple ASNs, then as solely determined by AOL, both networks will exchange routes equivalent to the Internet Network's footprint in those regions. – ATDN

There will be only one peering relationship per corporate (i.e. only one peering relationship -with a single

AS - for corporate companies) – tinet

Must use the same ASN at each peering interconnect – Charter