CoreSite - Atlanta (AT1)
Internet ExchangeAtlanta, GA · CoreSite
At a glance
CoreSite - Atlanta (AT1) is a colocation and interconnection facility listed in PeeringDB, located at 55 Marietta Street, Suites 570 & 800, Atlanta, GA 30303. It is operated by CoreSite. 70 networks are present at CoreSite - Atlanta (AT1) according to PeeringDB, ranking it 30th of 1,390 US facilities by network count. It hosts 4 internet exchanges (public peering fabrics).
Peering & carrier density
Location
How many networks and carriers are at CoreSite - Atlanta (AT1)?
70 networks are present at CoreSite - Atlanta (AT1) according to PeeringDB, ranking it 30th of 1,390 US facilities by network count. Within Georgia it ranks 3rd of 46 facilities. That is about 23 times the Georgia median of 3 networks per facility (national median: 2). 4 internet exchanges have switching equipment in the building, so networks can peer publicly as well as by private cross-connect.
Who operates CoreSite - Atlanta (AT1)?
PeeringDB lists CoreSite as the operator of CoreSite - Atlanta (AT1). CoreSite has 28 facilities in the GridCensus catalog across 10 states, 2 of them in Georgia.
Where is CoreSite - Atlanta (AT1) located?
The facility's address is 55 Marietta Street, Suites 570 & 800, Atlanta, GA 30303. Atlanta has 28 PeeringDB interconnection facilities in the catalog. Georgia has 46 of the 1,390 US facilities; the best-connected has 191 networks present.
What datacenters and sites are near CoreSite - Atlanta (AT1)?
5 datacenters are listed in the surrounding area (the largest by footprint); of those, the closest is QTS Atlanta Data Center 1, operated by Quality Technology Services, about 2.3 miles away. The highest-scoring datacenter candidate site in the surrounding area is NORCROSS in Gwinnett County, with a DC Readiness score of 71.3 out of 100.
Other exchanges in Atlanta
- Digital Realty ATL (56 Marietta)191 networks
- Digital Realty ATL (250 Williams)72 networks
- Equinix AT1 - Atlanta58 networks
- Equinix AT2/AT3 - Atlanta24 networks
- QTS Atlanta-Metro (ATL1)21 networks
- Cogent Atlanta15 networks
Nearby datacenters
- Google Datacenter - Douglas CountyGoogle · GA
- QTS SuwaneeQuality Technology Services · Suwanee, GA
- Hewlett-PackardGA
- QTS Atlanta Data Center 1Quality Technology Services · Atlanta, GA
- Ascent - Atlanta Data CenterAscent · GA
Nearby datacenter candidate sites
Scored candidate sites near CoreSite - Atlanta (AT1), ranked by DC Readiness. Co-location near a well-peered exchange is a meaningful fiber-connectivity advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| NORCROSS | Substation-Adjacent | GA | Gwinnett County | 500 kV | 1,000 MW | 5.8 yrs | 71.3 |
| UNKNOWN111549 | Substation-Adjacent | GA | Fulton County | 230 kV | 300 MW | 5.8 yrs | 70.3 |
| BIG SHANTY | Substation-Adjacent | GA | Cobb County | 500 kV | 1,000 MW | 5.8 yrs | 70.1 |
| UNION | Substation-Adjacent | GA | Clayton County | 500 kV | 1,000 MW | 5.8 yrs | 69.7 |
| O'HARA | Substation-Adjacent | GA | Clayton County | 500 kV | 1,000 MW | 5.8 yrs | 69.5 |
| BULL SLUICE | Substation-Adjacent | GA | Cobb County | 500 kV | 1,000 MW | 5.8 yrs | 69.0 |
| KLONDIKE | Substation-Adjacent | GA | Rockdale County | 500 kV | 1,000 MW | 5.8 yrs | 67.1 |
| UNKNOWN111533 | Substation-Adjacent | GA | Fulton County | 230 kV | 300 MW | 5.8 yrs | 67.0 |
Frequently asked questions
Who owns or operates CoreSite - Atlanta (AT1)?
CoreSite - Atlanta (AT1) is operated by CoreSite, according to its PeeringDB facility record. CoreSite has 28 US facilities in the GridCensus catalog across 10 states.
What is the address of CoreSite - Atlanta (AT1)?
CoreSite - Atlanta (AT1) is at 55 Marietta Street, Suites 570 & 800, Atlanta, GA 30303. Coordinates: 33.7558, -84.3909.
How many networks and carriers are at CoreSite - Atlanta (AT1)?
70 networks are present at CoreSite - Atlanta (AT1) according to PeeringDB, ranking it 30th of 1,390 US facilities by network count. The median Georgia facility has 3 networks present. PeeringDB counts every network (carriers, ISPs, cloud and content networks) that lists the facility as a point of presence.
Is there an internet exchange at CoreSite - Atlanta (AT1)?
Yes. PeeringDB records 4 internet exchanges with a presence at CoreSite - Atlanta (AT1).
Which datacenters are near CoreSite - Atlanta (AT1)?
Large datacenters catalogued near CoreSite - Atlanta (AT1) include QTS Atlanta Data Center 1 (Quality Technology Services), 2.3 miles away; Google Datacenter - Douglas County (Google), 11 miles away; Ascent - Atlanta Data Center (Ascent), 22 miles away.
More interconnection facilities and hubs in Georgia
About this data
Source: PeeringDB facility records, as published March 6, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “CoreSite - Atlanta (AT1), Atlanta, GA”, https://gridcensus.com/internet-exchanges/coresite-atlanta-at1-b35e8d1a (data as of March 6, 2026).
Dataset updated . Screening estimates derived from public data sources.
Network and exchange counts are point-in-time figures from PeeringDB and may lag changes at the facility.
Go deeper than the public screen
Every site and score for CoreSite - Atlanta (AT1), Atlanta, GA 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.