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Looking Glass Networks, Inc. was an American telecommunications company headquartered in
Oak Brook, Illinois Oak Brook is a village mostly in DuPage County with a small portion in Cook County in Illinois. Per the 2020 census, the population was 8,163. This suburb of Chicago has the headquarters of several companies and organizations including Ace H ...
. The company provides rapid delivery of data transport services including
SONET Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diode ...
/
SDH SDH may refer to: Science, medicine and technology * Serine dehydratase, an enzyme * L-sorbose 1-dehydrogenase, an enzyme * Succinate dehydrogenase, an enzyme * Shubnikov–de Haas effect * Social Determinants of Health, economic and social condi ...
,
Wavelength-division multiplexing In fiber-optic communications, wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e., colors) of laser light. This techniq ...
and
Ethernet Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 198 ...
as well as IP connectivity,
dark fiber A dark fibre or unlit fibre is an unused optical fibre, available for use in fibre-optic communication. Dark fibre may be leased from a network service provider. Dark fibre originally referred to the potential network capacity of telecommunic ...
and carrier-neutral colocation. Looking Glass also offers custom design and build services for specific campus or data center requirements. On August 3, 2006,
Level 3 Communications Level 3 Communications was an American multinational telecommunications and Internet service provider company headquartered in Broomfield, Colorado. It ultimately became a part of CenturyLink (now Lumen Technologies), where Level 3 President ...
acquired Looking Glass, at which time the company's dark fiber offerings were deemphasized in favor of managed lit services. On November 1, 2017,
CenturyLink Lumen Technologies, Inc. (formerly CenturyLink) is an American telecommunications company headquartered in Monroe, Louisiana, that offers communications, network services, security, cloud solutions, voice, and managed services. The company is ...
completed its acquisition of Level 3 Communications.{{Cite web , url=http://ir.centurylink.com/Cache/1001229930.PDF?O=PDF&T=&Y=&D=&FID=1001229930&iid=4057179 , title=Archived copy , access-date=2018-10-02 , archive-date=2017-12-05 , archive-url=https://web.archive.org/web/20171205071032/http://ir.centurylink.com/Cache/1001229930.PDF?O=PDF&T=&Y=&D=&FID=1001229930&iid=4057179 , url-status=dead


Service locations

Services are available in the largest U.S. metro areas including: *
Atlanta, Georgia Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,715 ...
*
Baltimore, Maryland Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...
*
Chicago, Illinois (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...
*
Dallas, Texas Dallas () is the third largest city in Texas and the largest city in the Dallas–Fort Worth metroplex, the fourth-largest metropolitan area in the United States at 7.5 million people. It is the largest city in and seat of Dallas County w ...
*
Houston, Texas Houston (; ) is the most populous city in Texas, the most populous city in the Southern United States, the fourth-most populous city in the United States, and the sixth-most populous city in North America, with a population of 2,304,580 in ...
*
Los Angeles, California Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the world' ...
* New York City Metro Area *
Philadelphia, Pennsylvania Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Sinc ...
*
Silicon Valley, California Silicon Valley is a region in Northern California that serves as a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical areas San Mateo County ...
*
Seattle, Washington Seattle ( ) is a port, seaport city on the West Coast of the United States. It is the county seat, seat of King County, Washington, King County, Washington (state), Washington. With a 2020 population of 737,015, it is the largest city in bo ...
* Washington, D.C. Metro Area


Service detail

The company's physically diverse networks provide customers with connections to primary
carrier hotel A colocation center (also spelled co-location, or colo) or "carrier hotel", is a type of data centre where equipment, space, and bandwidth are available for rental to retail customers. Colocation facilities provide space, power, cooling, and ...
s, incumbent local exchange carrier central offices, key enterprise buildings and other major data aggregation facilities. Looking Glass interconnects with more than 140 carriers, has over 760
points of presence A point of presence (PoP) is an artificial demarcation point or network interface point between communicating entities. A common example is an ISP point of presence, the local access point that allows users to connect to the Internet with their ...
, 430 on-net buildings and 860 Type II buildings. This connectivity, coupled with their protocol "agnostic" platform, allows Looking Glass to deliver flexible service options and fast delivery intervals to customers with significant
bandwidth Bandwidth commonly refers to: * Bandwidth (signal processing) or ''analog bandwidth'', ''frequency bandwidth'', or ''radio bandwidth'', a measure of the width of a frequency range * Bandwidth (computing), the rate of data transfer, bit rate or thr ...
needs.


References

Companies based in DuPage County, Illinois Oak Brook, Illinois Level 3 Communications Lumen Technologies Telecommunications companies of the United States 2006 mergers and acquisitions