Question: In which district of Boston is the flagship station of the Boston Bruins Radio Network located?

Context paragraphs:
New York Yankees Radio Network: The New York Yankees Radio Network is a CBS-owned radio network that broadcasts New York Yankees baseball games to 52 stations across 14 states.  The network's flagship station is WFAN, which succeeded sister station WCBS as the flagship in 2014; WCBS had aired Yankees broadcasts since the network was founded in 2002 while WFAN had been the flagship station for the Yankees' crosstown rivals, the New York Mets, since the station's founding.  (In a rare move, WFAN carried the live broadcast of the Yankees day/night doubleheader at the Baltimore Orioles on August 28, 2011, so WCBS could remain within its usual news format for live, continuing coverage of Hurricane Irene.)  The full on-air name of the broadcasts is the WFAN Yankees Radio Network Driven by Jeep, with the Chrysler LLC subsidiary continuing its sponsorship of the network while games are broadcast from the "Sunoco broadcast booth."

Bob Beers (ice hockey): Robert Charles Beers, (born May 20, 1967 in Pittsburgh, Pennsylvania but raised near Buffalo, New York) is a retired American professional ice hockey defenseman.  He currently serves as a radio commentator on Boston Bruins broadcasts on the WBZ Bruins radio network and is an occasional contributor to NESN Bruins and College Hockey broadcasts.  Beers played Division 1 College Hockey at the University of Maine, in Orono, Maine.  He is one of many former Black Bear players who went on to play in the NHL.

WBZ-FM: WBZ-FM is a sports radio station known as "98.5 The Sports Hub" and broadcasting on 98.5 MHz in Boston, Massachusetts.  Owned by CBS Radio, the current WBZ-FM began on August 8, 2009 and competes with AM and FM sports talk station WEEI/WEEI-FM.  WBZ-FM is home to the Boston Bruins, New England Patriots, Boston Celtics and New England Revolution radio networks.  Its studios are located in Allston district of Boston, and its transmitter is in Newton.

Boston Celtics Radio Network: The Boston Celtics Radio Network is a radio network that broadcasts Boston Celtics basketball games with a flagship station of WBZ-FM/98.5.  Carried in 5 of the 6 New England states, the network has 20 stations (8 on A.M., 12 on F.M.).  On September 26, 2013, it was announced that as part of a multi-year deal, WBZ-FM will be the new flagship (with WZLX/100.7 carrying games when there is a conflict with Boston Bruins or New England Patriots games).

Packers Radio Network: The Packers Radio Network is a broadcast radio network and the official radio broadcaster of the Green Bay Packers football team.  The network's flagship is the E. W. Scripps Company's WTMJ in Milwaukee, Wisconsin, which has broadcast the games since November 24, 1929, and was the former flagship station of Journal Communications until Scripps and Journal completed their broadcast merger and publishing spin-off on April 1, 2015.  This is one of the few arrangements where a team's flagship radio station is not based in their home market and the local station serves as a network affiliate only, as WTMJ's signal to Green Bay and most of Wisconsin's population centers is city-grade; the rights for Packers games in the Green Bay area have bounced between Midwest Communications and Cumulus Media throughout the last few years, while stations carrying the games owned by Woodward Communications which nominally serve the Fox Cities exclusively have equally heavy listenership in Green Bay.

New England Patriots Radio Network: The New England Patriots Radio Network is a CBS Radio network which carries live game broadcasts of the New England Patriots.  The network's flagship station is WBZ-FM/98.5, located in Boston, Massachusetts.  Gil Santos, former WBZ sports reporter who was known as the "Voice of the New England Patriots" retired after the 2012 season (during the Patriots' December win over the Dolphins that season part of Santos' radio call was simulcast by CBS television in recognition of his time with the team) and was replaced by Bob Socci, who now does the play-by-play with former Patriots quarterback Scott Zolak providing the color commentary and former Patriots linebacker Matt Chatham and WBZ-TV/WSBK-TV sports reporter Steve Burton providing the sideline reports.  Marc Bertrand and "Boston Globe" sports columnist Chris Gasper host the pregame (when one of them is unavailable Greg Dickerson fills in), and the postgame show is hosted by Bertrand and former Patriot Steve DeOssie.  Former hosts of the network's pre- and postgame show include Gary Tanguay, Andy Gresh, Bill Abbate, Mike Ruth, Tim Fox, and Pete Brock.  Albert Breer is a regular guest analyst on the network's pre-game show.

Providence Bruins Radio Network: The Providence Bruins Radio Network was the radio network of the Providence Bruins, a minor league affiliate of the Boston Bruins, which operated from 1992-2014.  As of the 2014-15 season, the Providence Bruins games' audio can be heard online only.

Boston Bruins Radio Network: The Boston Bruins Radio Network is a 27-station (18 A.M., 9 F.M. plus 2 F.M. translators) CBS Radio network which carries live game broadcasts of the Boston Bruins.  The network's flagship station is WBZ-FM/98.5-Boston, Massachusetts.  Dave Goucher announces play-by-play.  Bob Beers provides color commentary.

Matt Pinto: Matt Pinto is the radio voice for the Oklahoma City Thunder for WWLS-FM 98.1, the flagship station for the Thunder Radio Network.  He formerly served as the radio play-by-play voice for the Seattle SuperSonics for KTTH-AM 770, the flagship station for the Sonics Radio Network.  He was previously named as the radio voice of the Los Angeles Clippers for KSPN-AM (710 ESPN, Los Angeles) on August 24, 2005, and he would work at least 70 games a year, while the regular television announcing team of Ralph Lawler and Michael Smith would work the remaining 12 games on radio only.  Previously, he spent eight years doing radio and television coverage for the Dallas Mavericks, the first four exclusively on radio and the other four exclusively for television.  While in Dallas, he often referred to players as "water bugs" on plays in which they were driving to the basket.  He worked alongside Bob Ortegel during his television career in Dallas.

Houston Astros Radio Network: The Houston Astros Radio Network is an American broadcast network of radio affiliates in operation since 1962 that broadcast coverage of the Houston Astros before, during, and after that team's games.  Radio content is broadcast in both the English and Spanish languages.  It consists of 26 stations (and 4 broadcast relay stations) that span across three states with its English flagship station as KBME and its Spanish flagship station as K231CE (an FM translator fed by an HD Radio signal of KODA), both in Houston.  In addition to its affiliates, Houston Astros Radio Network content can be listened to on satellite radio via Sirius XM Radio and online using both MLB.tv and Sirius XM Internet Radio.

Supporting paragraphs: Boston Bruins Radio Network WBZ-FM
Answer: Allston