Internet Exchanges & Peering Facilities
At a glance
GridCensus lists 1,390 US colocation and interconnection facilities from PeeringDB, the public registry where networks record where they connect. The best-connected is Equinix DC1-DC15,DC21-DC22 - Ashburn in Ashburn, VA, with 504 networks present. California has the most facilities (149), followed by Texas (114) and Virginia (86). The median facility has 2 networks present.
Interconnection facilities by state
Each state page lists every catalogued facility in that state with its network count, alongside the state's datacenters and scored candidate sites.
- California (149)
- Texas (114)
- Virginia (86)
- New York (84)
- Illinois (71)
- Florida (63)
- Ohio (60)
- Washington (49)
- New Jersey (48)
- Georgia (46)
- Pennsylvania (43)
- Massachusetts (38)
- Oregon (36)
- Minnesota (35)
- Colorado (31)
- North Carolina (31)
- Arizona (30)
- Missouri (25)
- Iowa (25)
- Utah (25)
- Michigan (23)
- Tennessee (20)
- Indiana (20)
- Maryland (18)
- Wisconsin (17)
- Connecticut (16)
- Wyoming (13)
- Nevada (12)
- Kentucky (11)
- Oklahoma (11)
- Nebraska (10)
- Montana (10)
- Kansas (9)
- Idaho (7)
- South Dakota (7)
- South Carolina (7)
- Hawaii (7)
- New Mexico (7)
- Alabama (6)
- North Dakota (6)
- Louisiana (6)
- Rhode Island (5)
- Arkansas (5)
- Vermont (5)
- New Hampshire (4)
- Maine (4)
- District of Columbia (4)
- West Virginia (4)
- Alaska (4)
- Delaware (2)
- Mississippi (1)
Best-connected facilities by network count
Equinix DC1-DC15,DC21-DC22 - Ashburn
Ashburn, VA
504 networks · 8 IX
CoreSite - Los Angeles (LA1) One Wilshire
Los Angeles, CA
341 networks · 5 IX
Equinix CH1/CH2/CH4 - Chicago
Chicago, IL
329 networks · 10 IX
Equinix MI1 - Miami, NOTA
Miami, FL
323 networks · 9 IX
Hurricane Electric Fremont 2
Fremont, CA
304 networks · 15 IX
Equinix SV1/SV5/SV10 - Silicon Valley, San Jose
San Jose, CA
280 networks · 8 IX
Digital Realty Seattle SEA10
Seattle, WA
234 networks · 5 IX
CoreSite - Los Angeles (LA2)
Los Angeles, CA
194 networks · 3 IX
Digital Realty ATL (56 Marietta)
Atlanta, GA
191 networks · 4 IX
Equinix DA1 - Dallas
Dallas, TX
168 networks · 5 IX
Digital Realty NYC (60 Hudson)
New York, NY
160 networks · 8 IX
1530 SWIFT - NOCIX
North Kansas City, MO
151 networks · 15 IX
CoreSite - Denver (DE1)
Denver, CO
143 networks · 3 IX
Equinix LA1 - Los Angeles
Los Angeles, CA
142 networks · 6 IX
Equinix NY2/NY4/NY5/NY6 - New York, Secaucus
Secaucus, NJ
132 networks · 9 IX
Digital Realty NYC (111 8th Ave)
New York, NY
131 networks · 6 IX
Equinix SE2/SE3 - Seattle
Seattle, WA
110 networks · 5 IX
165 Halsey Meet-Me Room
Newark, NJ
107 networks · 5 IX
Equinix DA3 - Dallas
Dallas, TX
104 networks · 6 IX
Digital Realty CHI (350 E Cermak)
Chicago, IL
97 networks · 7 IX
Equinix NY9 - New York, 111 8th Avenue
New York, NY
82 networks · 4 IX
Netrality Kansas City - 1102 Grand
Kansas City, MO
81 networks · 4 IX
Markley Group One Summer Street Boston
Boston, MA
80 networks · 1 IX
CoreSite - Reston (VA1)
Reston, VA
79 networks · 6 IX
Equinix DA6 - Dallas
Dallas, TX
77 networks · 6 IX
Cologix MIN1
Minneapolis, MN
77 networks · 6 IX
PhoenixNAP
Phoenix, AZ
75 networks · 3 IX
Digital Realty ATL (250 Williams)
Atlanta, GA
72 networks · 3 IX
CoreSite - Chicago (CH1)
Chicago, IL
71 networks · 6 IX
CoreSite - Atlanta (AT1)
Atlanta, GA
70 networks · 4 IX
PTOR1
Portland, OR
69 networks · 2 IX
Equinix SV8 - Silicon Valley, Palo Alto
Palo Alto, CA
68 networks · 4 IX
Digital Realty DFW (2323 Bryan St)
Dallas, TX
61 networks · 4 IX
Equinix DA - Dallas (previously Infomart Dallas)
Dallas, TX
58 networks · 3 IX
Equinix AT1 - Atlanta
Atlanta, GA
58 networks · 3 IX
CoreSite - San Jose (SV1)
San Jose, CA
56 networks · 4 IX
123.NET - DC1 - 24700 Northwestern Hwy.
Southfield, MI
55 networks · 2 IX
Digital Realty LAX (600 W 7th)
Los Angeles, CA
54 networks · 1 IX
Equinix LA3/LA4 - Los Angeles, El Segundo
El Segundo, CA
53 networks · 3 IX
Equinix DA11 - Dallas
Dallas, TX
52 networks · 3 IX
Evocative DA4
Dallas, TX
49 networks · 4 IX
Equinix DA2 - Dallas
Dallas, TX
49 networks · 5 IX
Netrality Philadelphia - 401 N Broad
Philadelphia, PA
48 networks · 3 IX
1623 Farnam - Omaha
Omaha, NE
46 networks · 1 IX
Digital Realty SFO (200 Paul)
San Francisco, CA
45 networks · 2 IX
Switch Las Vegas
Las Vegas, NV
44 networks · 1 IX
Hurricane Electric Fremont 1
Fremont, CA
44 networks · 2 IX
Telehouse - New York Chelsea
New York, NY
44 networks · 5 IX
Equinix CH3 - Elk Grove
Elk Grove Village, IL
44 networks · 2 IX
ColoHouse Miami
Miami, FL
43 networks · 3 IX
Netrality St. Louis - 900 Walnut
St. Louis, MO
42 networks · 5 IX
DataBank Dallas (DFW1)
Dallas, TX
41 networks · 4 IX
Netrality - Indy Telcom Center - 733 W. Henry
Indianapolis, IN
41 networks · 2 IX
Netrality St. Louis - 210 N Tucker
St. Louis, MO
41 networks · 5 IX
Telehouse - Teleport Center (New York)
Staten Island, NY
40 networks · 3 IX
Digital Realty NYC (32 AofA)
New York, NY
40 networks · 3 IX
EdgeConneX Phoenix (EDCPHX01)
Tempe, AZ
39 networks · 3 IX
DataBank Salt Lake City (SLC1)
Salt Lake City, UT
39 networks · 3 IX
DataBank Pittsburgh (PIT1)
Pittsburgh, PA
38 networks · 1 IX
CoreSite - Boston (BO1)
Somerville, MA
38 networks · 2 IX
Digital Realty SFO (365 Main)
San Francisco, CA
36 networks · 3 IX
CoreSite - New York (NY1)
New York, NY
36 networks · 4 IX
QTS Piscataway (PNJ1)
Piscataway, NJ
35 networks · 3 IX
Equinix NY1 - New York, Newark
Newark, NJ
34 networks · 2 IX
DataBank Ashburn (IAD1)
Ashburn, VA
34 networks · 2 IX
Databank Houston West (HOU1) (HOU2)
Houston, TX
33 networks · 2 IX
Cologix JAX1
Jacksonville, FL
33 networks · 1 IX
Digital Realty PHX10 (120 E Van Buren)
Phoenix, AZ
32 networks · 3 IX
Digital Realty MIA (36 NE 2nd St)
Miami, FL
32 networks · 4 IX
Iron Mountain Data Center - Phoenix (AZP-1)
Phoenix, AZ
30 networks · 3 IX
CoreSite - Secaucus (NY2)
Secaucus, NJ
30 networks · 3 IX
Lifeline Eastgate
Indianapolis, IN
29 networks · 2 IX
Cologix COL1
Columbus, OH
29 networks · 2 IX
Netrality Houston - 1301 Fannin
Houston, TX
29 networks · 6 IX
60 Hudson
New York, NY
28 networks · 2 IX
Equinix MI2 - Miami
Miami, FL
28 networks · 3 IX
H5 Data Centers Tampa
Tampa, FL
28 networks · 2 IX
MDC McAllen
McAllen, TX
28 networks · 1 IX
DRFortress HNL
Honolulu, HI
27 networks · 1 IX
H5 Data Centers New York
New York, NY
26 networks · 3 IX
Equinix DA4 - Dallas
Dallas, TX
26 networks · 3 IX
RagingWire VA1 - NTT
Ashburn, VA
25 networks · 1 IX
EdgeConneX Portland (EDCPOR01)
Hillsboro, OR
25 networks · 2 IX
RACK59 Data Center
Oklahoma City, OK
25 networks · 1 IX
FIBERSTATE Salt Lake City (SLC1)
Draper, UT
24 networks · 1 IX
Flexential - Salt Lake City/Downtown (SLC04)
Salt Lake City, UT
24 networks · 3 IX
Equinix AT2/AT3 - Atlanta
Atlanta, GA
24 networks · 1 IX
Equinix SV2 - Silicon Valley, Santa Clara
Santa Clara, CA
24 networks · 2 IX
Equinix SV3 - Silicon Valley, San Jose
San Jose, CA
23 networks · 2 IX
Cologix DAL1
Dallas, TX
23 networks · 2 IX
Cologix COL2
Columbus, OH
23 networks · 2 IX
Flexential - Portland/Hillsboro 2 (PDX02)
Hillsboro, OR
23 networks · 1 IX
DataBank Salt Lake City (SLC2)
Bluffdale, UT
22 networks · 2 IX
Netrality Chicago - 717 S Wells
Chicago, IL
22 networks · 4 IX
H5 Data Centers Nashville
Nashville, TN
22 networks · 2 IX
Cologix MIN3
Minneapolis, MN
22 networks · 3 IX
OpenColo
Santa Clara, CA
22 networks · 3 IX
CoreSite - Miami (MI1)
Miami, FL
22 networks · 2 IX
QTS Richmond (RIC1)
Sandston, VA
22 networks · 3 IX
Netrality - Indy Telcom Center - 701 W. Henry
Indianapolis, IN
21 networks · 2 IX
H5 Data Centers San Antonio
San Antonio, TX
21 networks · 1 IX
365 Data Centers Chicago (CH6)
Chicago, IL
21 networks · 2 IX
QTS Atlanta-Metro (ATL1)
Atlanta, GA
21 networks · 2 IX
CoreSite - Santa Clara (SV4)
Santa Clara, CA
21 networks · 3 IX
KOMO Plaza Seattle (Formerly Fisher Plaza)
Seattle, WA
21 networks · 2 IX
WowRack
Tukwila, WA
21 networks · 3 IX
CoreSite - Santa Clara (SV7)
Santa Clara, CA
20 networks · 2 IX
Equinix PH1 - Philadelphia
Philadelphia, PA
20 networks · 1 IX
Digital Realty CHI (2200 Busse Rd.)
Elk Grove Village, IL
20 networks · 2 IX
Northwestern University co-location facility
Chicago, IL
20 networks
CoreSite - Reston (VA2)
Reston, VA
20 networks · 3 IX
Evocative EWR1
Secaucus, NJ
19 networks · 1 IX
SFN IA-Davenport
Davenport, IA
19 networks · 1 IX
Iron Mountain Data Center - New Jersey (NJE-1)
Edison, NJ
19 networks · 2 IX
Lumen Boston
Cambridge, MA
19 networks · 1 IX
Digital Realty EWR (100 Delawanna)
Clifton, NJ
19 networks · 2 IX
DataBank Miami (MIA1)
Miami, FL
19 networks · 2 IX
Cologix COL3
Columbus, OH
19 networks · 2 IX
Dataverge
Brooklyn, NY
19 networks · 3 IX
H5 Data Centers Cleveland
Cleveland, OH
19 networks · 5 IX
Frequently asked questions
How many internet exchange and peering facilities are in the US?
GridCensus lists 1,390 US facilities from PeeringDB. 119 of the 120 best-connected host at least one internet exchange fabric.
Which US facility has the most networks?
Equinix DC1-DC15,DC21-DC22 - Ashburn in Ashburn, VA has the most, with 504 networks present. Next is CoreSite - Los Angeles (LA1) One Wilshire (341).
Which state has the most peering facilities?
California has 149. followed by Texas (114), Virginia (86), New York (84).
Which city has the most interconnection facilities?
New York, NY has 41. followed by Los Angeles, CA (37); Ashburn, VA (36); Santa Clara, CA (33).
What does the network count mean?
It is the number of networks — carriers, ISPs, cloud and content networks — that list the facility as a point of presence in PeeringDB. More networks in one building means more direct interconnection options without leaving it.
About this data
Source: PeeringDB facility records, as published November 12, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Internet exchange and peering facilities in the United States”, https://gridcensus.com/internet-exchanges (data as of November 12, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.