---
title: What PeeringDB Can and Cannot Tell You About a CDN | Netskrt
description: PeeringDB shows valuable interconnection data, but not a CDN’s full delivery footprint. Learn what else to check when evaluating reach, capacity, and performance.
image: https://www.netskrt.io/hubfs/Global%20Network%20Glow%20Map.png
---

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# CDN Peering and PeeringDB: What the Database Misses

 November 9, 2026

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Peering is an arrangement through which independently operated networks exchange traffic directly between their respective networks and customers. Some connections use a shared fabric at an internet exchange point, while others use a private interconnection between two networks.[PeeringDB](https://www.peeringdb.com/), originally established to facilitate peering, has expanded into a directory of interconnection information for networks, clouds, services, enterprises, and facilities.

That makes PeeringDB an important industry resource. However, it is sometimes asked to answer a question it was not designed to resolve on its own: How large or capable is a particular content delivery network?

## The limits of an interconnection directory

PeeringDB is a user-maintained registry. Its entries can show autonomous system numbers, public exchange participation, facility presence, peering policies, and contact details. They do not provide a complete inventory of a CDN’s caches, servers, delivery paths, or available capacity.

Even the information it does contain needs careful interpretation. Two networks listed at the same exchange or facility do not necessarily peer with each other. Facility listings do not inventory individual private interconnections or their capacities.

PeeringDB also includes reported exchange connection speeds, but adding these together does not establish a CDN’s total delivery capacity. Those figures omit other delivery paths and do not measure actual traffic, available headroom, server capacity, or downstream constraints.

## Why embedded deployments may be less visible

Embedded caching is an established CDN deployment model. Servers placed within ISP networks can deliver content close to subscribers without every deployment appearing in the CDN’s published interconnection footprint. Visibility depends on addressing, routing, interconnection arrangements, and the information operators publish.

For Netskrt, this distinction matters because much of its delivery model uses infrastructure within ISPs and network partners. Embedded caches can use the serving ISP’s connectivity, while partner-hosted deployments provide additional delivery resources. These deployments may not appear as distinct locations or connections in Netskrt’s PeeringDB record.

A provider with extensive published exchange and facility participation may therefore be easier to map through PeeringDB than one whose delivery resources rely more heavily on host-network connectivity. Neither profile, by itself, establishes the provider’s scale or performance.

## Evaluating the capacity that matters

PeeringDB is a useful starting point for understanding an operator’s published interconnection footprint. A serious CDN evaluation should also examine where the provider has delivery resources, which subscriber networks those resources can serve effectively, and how much capacity is available for the intended audience.

That assessment should distinguish provisioned capacity from resources that require activation, and committed capacity from shared or conditional availability. Access to a large partner network does not make that partner’s entire capacity available to the CDN. Geographic reach alone likewise does not demonstrate adequate performance during peak demand.

Buyers should request quality-of-experience data, representative event testing, failover procedures, and service-level commitments. For streaming, the decisive evidence is performance for the intended audience during peak events, including the ability to maintain service when infrastructure fails.

PeeringDB illuminates an important part of the network. The extent of a provider’s published footprint remains only one signal. A CDN ultimately demonstrates its capabilities through delivered traffic, verified performance, operational readiness, and its ability to meet customer commitments.

## Explore more ways to 
strengthen delivery.

![Global CDN peering connections and embedded caching servers](https://www.netskrt.io/hubfs/Global%20Network%20Glow%20Map.png)

 article

#### CDN Peering and PeeringDB: What the Database Misses

 November 09, 2026

[Read More](https://www.netskrt.io/blog/what-peeringdb-can-and-cannot-tell-you-about-a-cdn-netskrt)

![Peak-to-Average Ratio in CDN Capacity](https://www.netskrt.io/hubfs/Global%20analytics%20network%20dashboard.png)

 Blog

#### Peak-to-Average Ratio in CDN Capacity Planning

 October 29, 2026

[Read More](https://www.netskrt.io/blog/peak-to-average-ratio-in-cdn-capacity-planning)

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