EXHIBIT 99.1

             NEXTLINK ANNOUNCES CLOSING OF $1 BILLION SENIOR SECURED
                                CREDIT FACILITY

McLean, VA. (February 7, 2000) - NEXTLINK Communications, Inc. (NASDAQ: NXLK),
one of the nation's fastest growing providers of broadband communications
services, today announced the closing of a $1 billion senior secured credit
facility that was successfully syndicated to a broad group of lenders, including
50 banks and institutional investors.

The facility is comprised of a $387.5 million senior secured multi-draw term
loan, a $225 million senior secured term loan and a $387.5 million revolving
credit facility. NEXTLINK drew down $375 million of the term loan borrowings
were at closing. Availability of additional borrowings is subject to customary
conditions. The revolving credit facility and the multi-draw term loan are
scheduled to mature on December 31, 2006 and the $225 million secured loan is
scheduled to mature on June 30, 2007, in each case subject to acceleration if
certain of NEXTLINK's high yield notes are not refinanced. Loans under the
facility bear interest at variable rates. Up to $125 million of the proceeds
will be used to finance capital expenditures, to provide working capital and for
other general corporate purposes, and all remaining proceeds will be used to
provide purchase money financing for the construction, acquisition or
improvement of telecommunications assets.

 "We're pleased to close this transaction as it assures that we will have access
to funding needed to execute our current capital plan and it confirms NEXTLINK's
ability to access the capital markets," said NEXTLINK Chairman and Chief
Executive Officer Dan Akerson. "The ability to raise money is going to become an
increasingly important point of differentiation for companies who will evolve
from merely providing competitive telephone service to becoming broadband
communications industry leaders in the next decade."


Goldman Sachs Credit Partners L.P. and TD Securities (USA) Inc. acted as joint
lead arrangers and joint book running agents. Barclays Bank PLC and Chase
Manhattan Bank participated as co-documentation agents.

NEXTLINK provides high quality, broadband communications services to businesses
over fiber optic and broadband wireless facilities across the United States.
NEXTLINK currently is providing service in 49 markets. The company is the
largest holder of broadband fixed wireless spectrum in North America, with
licenses covering 95 percent of the population in the top 30 markets in the
United States. NEXTLINK plans to use wireless capabilities to complement and
extend the reach of its local fiber optic networks in the markets in which
NEXTLINK has spectrum. Additionally, NEXTLINK is acquiring exclusive rights to
use certain fibers and a conduit throughout a 16,000-mile high-speed, IP-centric
fiber optic backbone network that will connect over 50 cities in the United
States and Canada. The network is expected to be completed in 2001, with
NEXTLINK turning on segments of the network during 2000. Through this unrivaled
collection of facilities, NEXTLINK will provide integrated, end-to-end
telecommunications solutions to its customers. For more information, visit
http://www.nextlink.com.

On January 10, 2000, NEXTLINK and Concentric Network announced a $2.9 billion
transaction to combine the companies. The transaction is expected to close in
the second quarter of this year. Concentric Network provides complete Internet
business solutions for small- and medium-sized enterprises, including DSL
access, Web hosting and e-commerce. The company also offers data center
services, virtual private networks, dedicated access, and application
infrastructure services for delivering applications over the Internet or a
virtual private network.

                                       ###

The statements contained in this release which are not historical facts are
"forward-looking statements" (as such term is defined in the Private Securities
Litigation Reform Act of 1995). These statements include those describing the
Company's networks and the Concentric transaction. Management wishes to caution
the reader that these forward-looking statements are only predictions and are
subject to risks and uncertainties and actual results may differ materially


from those indicated in the forward-looking statements as a result of a number
of factors. These factors include, but are not limited to, the Company's ability
to design and construct fiber optic networks, install cable and facilities,
including switching electronics, to develop, install and provision LMDS
equipment and interconnect that equipment with the Company's fiber networks and
connect the networks, including LMDS equipment to customers and on satisfactory
terms and conditions, and certain risks related to the Company's national
network strategy.

CONTACTS:    Todd Wolfenbarger / media and industry analysts
             703-547-2011 / 703-675-3496 portable

             Nancy Bacchieri / financial analysts
             425.519.8940