Pittsburgh ist eine Stadt in 305704 Einwohner. Wir zählten 305704 IPs mit Datenbank von Maxmind. Pittsburgh hat 3261078 pro Einwohner.
| ASN | ASN Id | Total IP |
| Comcast Cable Communications, LLC | AS7922 | 266106 |
| UPMC | AS122 | 242606 |
| Verizon Business | AS701 | 219966 |
| University of Pittsburgh | AS4130 | 197620 |
| Pair Networks | AS7859 | 184296 |
| Carnegie Mellon University | AS9 | 132084 |
| United States Steel Corporation | AS393456 | 131322 |
| Community College of Allegheny County | AS23193 | 131038 |
| Pittsburgh Supercomputing Center | AS5050 | 128238 |
| Highmark Inc | AS21965 | 114676 |
| CONTINENTAL BROADBAND PENNSYLVANIA, INC. | AS17054 | 86024 |
| Reserved AS | AS22255 | 66804 |
| Duquesne University | AS8122 | 66042 |
| PNC Bank | AS10995 | 65536 |
| State of Michigan, DMB-CNOC | AS13325 | 65534 |
| Roads and Maritime Services | AS55542 | 65534 |
| Department of the Interior, Office of theSecretary | AS22284 | 65534 |
| IBM | AS18703 | 65534 |
| American International Group Data Center, Inc. | AS10975 | 65534 |
| Nationwide Building Society | AS13114 | 65534 |
| Duquesne Light Company | AS16821 | 65528 |
| PPG Industries, Inc. | AS17011 | 63982 |
| CGI Technologies and Solutions Inc. | AS40289 | 32766 |
| Pittsburgh Supercomputing Center | AS1206 | 32766 |
| YHC Corporation | AS3900 | 32766 |
| Microsoft Corporation | AS3598 | 32766 |
| Pittsburgh Supercomputing Center | AS1207 | 32762 |
| Mellon Bank | AS40375 | 32762 |
| Consolidated Communications, Inc. | AS13333 | 23378 |
| Clear Wireless LLC | AS16586 | 19154 |
| MAnet GmbH | AS13043 | 18428 |
| DQE Communications Network Services, LLC | AS33154 | 16848 |
| CGI Group Inc. | AS18563 | 16382 |
| Verizon Business | AS11486 | 16382 |
| Medical Computer Systems | AS11951 | 16382 |
| City of Pittsburgh | AS26059 | 16370 |
| Level 3 Communications, Inc. | AS3356 | 11762 |
| Electronics for Imaging, Inc. | AS15327 | 11000 |
| Enventis Telecom Inc. | AS12042 | 10746 |
| Pennsylvania State System of Higher Education | AS22192 | 10490 |
| Management Science Associates, Inc. | AS35962 | 10394 |
| Telnet Worldwide, Inc. | AS27553 | 8692 |
| Via Computer and Communications (ViaNet) | AS5690 | 8190 |
| Woods Hole Oceanographic Institution | AS11499 | 8190 |
| Oklahoma Gas & Electric Co. | AS32893 | 8190 |
| XO Communications | AS2828 | 8190 |
| Principal Financial Group | AS26848 | 8190 |
| Internet Junction Corporation | AS12131 | 8190 |
| CREATIVE NETWORK INNOVATIONS, INC. | AS10453 | 8190 |
| Pitt-Ohio Express, LLC. | AS18437 | 8176 |
| Powerhouse Management, Inc. | AS22363 | 7720 |
| Windstream Communications Inc | AS7029 | 7474 |
| Savvis | AS3561 | 6390 |
| Cellco Partnership DBA Verizon Wireless | AS22394 | 6134 |
| Full Service Computing Corp | AS32634 | 5364 |
| Maine Technical College System | AS22970 | 5116 |
| Grande Communications Networks, LLC | AS7459 | 4854 |
| TeraSwitch Networks Inc. | AS20326 | 4338 |
| Megapath Corporation | AS18566 | 4094 |
| Ad-base Systems, Inc. | AS16795 | 4094 |
| Black Box Network Services | AS14278 | 4094 |
| Douglas FastNet | AS13692 | 4094 |
| McGraw-Hill | AS4546 | 4094 |
| The School District of Pittsburgh | AS20031 | 4094 |
| Trent University | AS32638 | 4094 |
| Mongoose Metrics, LLC | AS55074 | 4094 |
| ProNSS | AS22006 | 4094 |
| City of Boston | AS27370 | 4094 |
| Forona Technologies, Inc. | AS36263 | 4094 |
| aspStation, Inc. | AS19261 | 4088 |
| Earthlink, Inc. | AS6983 | 4080 |
| Peerless Network LLC | AS21808 | 3578 |
| XPRESSBET INC. | AS40549 | 2634 |
| BBN Technologies Corp. | AS11488 | 2556 |
| Software Maintenance Specialists, Inc. | AS3503 | 2556 |
| Fifth Judicial District of PA | AS17172 | 2556 |
| Henderson Brothers, Inc. | AS19666 | 2552 |
| Linden Lab | AS26926 | 2290 |
| Sunesys, LLC | AS30372 | 2282 |
| Apple Inc. | AS714 | 2046 |
| United Parcel Service | AS12217 | 2046 |
| West Jefferson Med | AS30424 | 2046 |
| Epicor | AS30175 | 2046 |
| auth-servers, LLC | AS54145 | 2046 |
| Society of Automotive Engi | AS27200 | 2046 |
| Bayer Corporation | AS394221 | 2046 |
| Sureline Telecom | AS63069 | 2046 |
| Pulsenet | AS53504 | 2046 |
| Columbus Telecommunications (Barbados) Limited | AS14813 | 2046 |
| Ascent Data, LLC | AS21858 | 2046 |
| Sprint Government Systems Division | AS1790 | 2046 |
| MageMojo, LLC | AS53902 | 2044 |
| IDS | AS17084 | 1784 |
| Qwest Communications Company, LLC | AS209 | 1784 |
| Xerox Business Services LLC | AS16983 | 1782 |
| StratusWave Communications | AS16948 | 1532 |
| Fastly | AS54113 | 1532 |
| Ideal Integrations, Inc. | AS22804 | 1532 |
| Reserved AS | AS12017 | 1532 |
| Three Rivers Pharmaceuticals, LLC | AS46161 | 1532 |