ColoSpace - Waltham, MA
Internet ExchangeWaltham, MA · FirstLight Fiber, Inc.
At a glance
ColoSpace - Waltham, MA is a colocation and interconnection facility listed in PeeringDB, located at 265 Winter Street, Waltham, MA 02451. It is operated by FirstLight Fiber, Inc. 1 network is present at ColoSpace - Waltham, MA according to PeeringDB, ranking it 865th of 1,390 US facilities by network count.
Peering & carrier density
How many networks and carriers are at ColoSpace - Waltham, MA?
1 network is present at ColoSpace - Waltham, MA according to PeeringDB, ranking it 865th of 1,390 US facilities by network count. Within Massachusetts it ranks 23rd of 38 facilities. That is about half of the Massachusetts median of 2 networks per facility (national median: 2).
Who operates ColoSpace - Waltham, MA?
PeeringDB lists FirstLight Fiber, Inc. as the operator of ColoSpace - Waltham, MA. FirstLight Fiber, Inc. has 4 facilities in the GridCensus catalog across 2 states, 3 of them in Massachusetts.
Where is ColoSpace - Waltham, MA located?
The facility's address is 265 Winter Street, Waltham, MA 02451. Waltham has 4 PeeringDB interconnection facilities in the catalog. Massachusetts has 38 of the 1,390 US facilities; the best-connected has 80 networks present.
What datacenters and sites are near ColoSpace - Waltham, MA?
5 datacenters are listed in the surrounding area (the largest by footprint); of those, the closest is CoreSite BO1, operated by CoreSite, about 7.9 miles away. The highest-scoring datacenter candidate site in the surrounding area is K STREET in Suffolk County, with a DC Readiness score of 72.4 out of 100.
Other exchanges in Waltham
- Centersquare Boston (BOS1-A)5 networks
- Equinix BO1 - Boston, Waltham3 networks
- Cogent Boston0 networks
Nearby datacenters
- CoreSite BO1Somerville, MA
- Markley Data CenterMarkley Group · Lowell, MA
- TierPoint DCTierPoint · Andover, MA
- Digital Realty BostonDigital Realty · Boston, MA
- CoreSite BO1CoreSite · Somerville, MA
Nearby datacenter candidate sites
Scored candidate sites near ColoSpace - Waltham, MA, 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 |
|---|---|---|---|---|---|---|---|
| K STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 72.4 |
| MYSTIC | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 72.4 |
| UNKNOWN133682 | Substation-Adjacent | MA | Middlesex County | 450 kV | 600 MW | 4.3 yrs | 68.3 |
| KINGSTON STREET | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 68.2 |
| NORTH CAMBRIDGE | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 68.1 |
| WAKEFIELD JUNCTION | Substation-Adjacent | MA | Suffolk County | 345 kV | 600 MW | 4.3 yrs | 67.9 |
| UNKNOWN132744 | Substation-Adjacent | NH | Hillsborough County | 345 kV | 600 MW | 4.3 yrs | 67.6 |
| TEWKSBURY NO. 22A | Substation-Adjacent | MA | Middlesex County | 345 kV | 600 MW | 4.3 yrs | 67.2 |
Frequently asked questions
Who owns or operates ColoSpace - Waltham, MA?
ColoSpace - Waltham, MA is operated by FirstLight Fiber, Inc., according to its PeeringDB facility record. FirstLight Fiber, Inc. has 4 US facilities in the GridCensus catalog across 2 states.
What is the address of ColoSpace - Waltham, MA?
ColoSpace - Waltham, MA is at 265 Winter Street, Waltham, MA 02451. Coordinates: 42.3999, -71.2531.
How many networks and carriers are at ColoSpace - Waltham, MA?
1 network is present at ColoSpace - Waltham, MA according to PeeringDB, ranking it 865th of 1,390 US facilities by network count. The median Massachusetts facility has 2 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 ColoSpace - Waltham, MA?
PeeringDB records no internet exchange fabric at ColoSpace - Waltham, MA.
Which datacenters are near ColoSpace - Waltham, MA?
Large datacenters catalogued near ColoSpace - Waltham, MA include CoreSite BO1 (CoreSite), 7.9 miles away; CoreSite BO1, 9.0 miles away; Digital Realty Boston (Digital Realty), 10 miles away.
More interconnection facilities and hubs in Massachusetts
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, “ColoSpace - Waltham, MA, Waltham, MA”, https://gridcensus.com/internet-exchanges/colospace-waltham-ma-b10740fb (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 ColoSpace - Waltham, MA, Waltham, MA 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.