CoreSite AT1
DatacenteractiveAtlanta, GA · CoreSite
At a glance
CoreSite AT1 is a colocation datacenter at 55 Marietta St NW, Atlanta, GA 30303-2807. It is operated by CoreSite. Among the best-connected interconnection facilities in the area, the closest is CoreSite - Atlanta (AT1), 0.0 miles away, with 70 connected networks.
Who operates CoreSite AT1?
CoreSite AT1 is operated by CoreSite. In the GridCensus catalog CoreSite is listed at 27 US datacenters in 10 states, 1 of them in Georgia. The operators with the most facilities in Georgia are Quality Technology Services (9), Digital Realty (4), Meta (4).
Where is CoreSite AT1 located?
The facility's recorded address is 55 Marietta St NW, Atlanta, GA 30303-2807. It is one of 18 datacenters catalogued in Atlanta. Georgia has 61 catalogued datacenters, the 12th-most of any state. The largest clusters in the state are Atlanta (18), Alpharetta (6), Lithia Springs (6).
What network and power infrastructure is near CoreSite AT1?
5 PeeringDB interconnection facilities are listed in the surrounding area; of those, the closest is CoreSite - Atlanta (AT1), about 0.0 miles away. The best-connected of them, Digital Realty ATL (56 Marietta), has 191 networks present, against a Georgia median of 3 networks per facility. 5 other datacenters are listed in the surrounding area (within about half a degree of latitude and longitude). The highest-scoring candidate site nearby is NORCROSS in Gwinnett County, with a DC Readiness score of 71.3 out of 100 and a 500 kV substation nearby.
Nearby internet exchanges
- Digital Realty ATL (56 Marietta)Atlanta, GA · 191 networks
- Digital Realty ATL (250 Williams)Atlanta, GA · 72 networks
- CoreSite - Atlanta (AT1)Atlanta, GA · 70 networks
- Equinix AT1 - AtlantaAtlanta, GA · 58 networks
- Equinix AT2/AT3 - AtlantaAtlanta, GA · 24 networks
Other datacenters nearby
- 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 AT1, ranked by DC Readiness — useful for evaluating expansion or second-site options in the same power/fiber market.
| 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 |
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Frequently asked questions
Who owns or operates CoreSite AT1?
CoreSite AT1 is operated by CoreSite. CoreSite runs 27 datacenters in the GridCensus catalog across 10 states. Ownership of the building itself can differ from the operator; the operator is the company running the facility.
What is the address of CoreSite AT1?
CoreSite AT1 is located at 55 Marietta St NW, Atlanta, GA 30303-2807. Its coordinates are 33.7560, -84.3912.
Which internet exchanges and carrier hotels are near CoreSite AT1?
GridCensus lists 5 PeeringDB interconnection facilities near CoreSite AT1: CoreSite - Atlanta (AT1) (0.0 miles, 70 networks); Digital Realty ATL (56 Marietta) (0.0 miles, 191 networks); Equinix AT2/AT3 - Atlanta (0.0 miles, 24 networks).
What type of datacenter is CoreSite AT1?
CoreSite AT1 is classified as a colocation facility — space, power and cooling leased to multiple tenants who install their own servers and buy cross-connects to carriers inside the building.
More datacenters and hubs in Georgia
- All datacenters in Georgia· 61 facilities
- CoreSite — company profile· 27 datacenters
- Datacenter candidate sites in Georgia
- QTS Atlanta Data Center 1· Quality Technology Services · 719,736 sq ft
- QTS Atlanta Data Center 2· Quality Technology Services · 283,307 sq ft
- Digital Realty Data Center· Digital Realty · 128,785 sq ft
- CenturyLink· Lumen Technologies Inc · 23,046 sq ft
- AT1 Atlanta· Equinix
- Atlanta ATL13· Digital Realty
- All US datacenters
- Internet exchanges and peering facilities
About this data
Source: PNNL datacenter atlas and OpenStreetMap facility records, deduplicated by GridCensus, as published March 7, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “CoreSite AT1, Atlanta, GA”, https://gridcensus.com/datacenters/coresite-at1-dffd808f (data as of March 7, 2026).
Dataset updated . Screening estimates derived from public data sources.
Capacity and footprint are catalogued figures from public facility records and may lag operational changes.
Go deeper than the public screen
Every site and score for CoreSite 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.