Busan is a city in with 2878219 residents. We counted 3678555 IPs from Maxmind database. Busan has 2878219 per resident.
| ASN | ASN Id | Total IP |
| Korea Telecom | AS4766 | 520676 |
| LG Powercomm | AS17858 | 302954 |
| SK Broadband Co Ltd | AS9318 | 234108 |
| SHINHAN DATA SYSTEM | AS18032 | 116034 |
| BUSAN EDUCATION RESEARCH & INFORMATION CENTER, K | AS9706 | 99306 |
| Korea Housing & Urban Guarantee Corporation | AS38112 | 97488 |
| CJ-HELLOVISION | AS9845 | 73702 |
| Yabesk | AS46009 | 66012 |
| Pusan National University | AS9274 | 65534 |
| Joongbu University | AS10190 | 55280 |
| KONAI | AS45968 | 55136 |
| Gyeongnam national university of science an | AS18163 | 52202 |
| CJ-HELLOVISION | AS9697 | 49640 |
| Kyungsung University | AS9691 | 49638 |
| NAKDONGDIGITALBUSANNET-AS-KR | AS17857 | 49144 |
| KOREA RESOURCES RECOVERY AND REUTILIZATION CORP | AS17600 | 48486 |
| Hyundai Heavy Industries | AS4793 | 44520 |
| DIGITALBUSANDONGNAM-AS-KR | AS17871 | 41458 |
| Microsoft Corporation | AS8075 | 36332 |
| KOSCOM | AS9526 | 34282 |
| FORCETEC Co., LTD. | AS38427 | 32234 |
| Changwon National University | AS18170 | 32234 |
| Hanjin Information Systems & Telecommunication Co. | AS45399 | 30966 |
| CJ-HELLOVISION | AS10037 | 30708 |
| PUSAN CABLE TV SYSTEM CO., LTD. | AS23584 | 27640 |
| INITECH | AS23556 | 26614 |
| LG Dacom Corporation | AS3786 | 26606 |
| Amorepacific | AS10169 | 25590 |
| Kookmin Bank | AS10196 | 24566 |
| Pukyong National University | AS9708 | 23532 |
| GABIA Inc. | AS17589 | 23030 |
| Posco ICT | AS18305 | 22518 |
| SMARTRO | AS9690 | 21492 |
| Youngsan University | AS9631 | 20470 |
| Hankyong National Univercity | AS38697 | 19956 |
| Korea Nazarene University | AS23552 | 19446 |
| KNOC | AS55620 | 17912 |
| Microsoft (China) Co., Ltd. | AS58593 | 16382 |
| Busan Cycle Racing Corporation | AS23562 | 16380 |
| Dongduk Womens University | AS55627 | 16376 |
| Korea Data Telecommunication Co., Ltd. | AS55592 | 14322 |
| CMB Kwangju Broadcasting | AS10054 | 12284 |
| National Information & Credit Evaluation | AS17859 | 12284 |
| ASSETPLUS INVESTMENT MANAGEMENT Co., LTD | AS38706 | 12282 |
| Actelecom | AS38666 | 12278 |
| SK Telecom | AS9644 | 10362 |
| SK Co. | AS9705 | 10230 |
| uniconverse | AS45386 | 9212 |
| Korea Christian University | AS18325 | 8700 |
| DUZONBIZON | AS55615 | 8698 |
| Korea Maritime and Ocean University | AS18023 | 8698 |
| CJ-HELLOVISION | AS10066 | 8190 |
| Korea Telecom | AS45400 | 8190 |
| Korailretail | AS45392 | 8190 |
| Dong-Eui University | AS9870 | 8190 |
| Toyo Engineering Korea | AS45970 | 8190 |
| GORayNet | AS9862 | 8190 |
| Saero Network Service Ltd | AS9981 | 8188 |
| KYUNGWOON UNIVERSITY | AS18157 | 8188 |
| CJ-HELLOVISION | AS45365 | 6650 |
| KISTI | AS1237 | 6390 |
| Pocheon Office of Education | AS38410 | 6140 |
| Tbroad Ginam Broadcating Co., Ltd. | AS17849 | 6140 |
| DongJak District office of Education | AS3357 | 5116 |
| GunpoUiwang Office of Education | AS38403 | 4094 |
| Chonbuk National University | AS7560 | 4094 |
| JTNet | AS38709 | 4094 |
| BNK Securities Co.,Ltd | AS18299 | 4094 |
| SK Securities Limited | AS9630 | 4094 |
| Konyang University | AS17856 | 4094 |
| HANWHA Corp./Information Service div. | AS9684 | 4094 |
| Dongwha Enterprise Co. Ltd. | AS45987 | 4094 |
| Sunchon National University | AS9962 | 4094 |
| BUSANBANK | AS10193 | 3578 |
| Korea Stock Exchange | AS9959 | 3068 |
| Shinjin Network | AS38114 | 3068 |
| Microsoft Corporation | AS8068 | 2886 |
| HCN Dongjak | AS7562 | 2046 |
| Silla Univ | AS17609 | 2046 |
| KYONGGI YANGPYEONG OFFICE OF EDUCATION | AS38392 | 2046 |
| Hana Broadcasting Co, Ltd | AS55600 | 2046 |
| Cheiljedang.Co.Inc. | AS9578 | 2046 |
| Paju office of Education Gyeonggi Province | AS38396 | 2046 |
| WooSong University | AS9782 | 2046 |
| Hana Bank Co. | AS10185 | 2046 |
| Hansol High School | AS55632 | 2046 |
| Dong-A Universirty | AS9753 | 2046 |
| American Home Assurance Korea | AS45391 | 2046 |
| Gyeonggi Uijeongbu office of Education | AS38398 | 2046 |
| Entonetworks | AS45967 | 2046 |
| FCABLE | AS9689 | 2046 |
| GangNam District office of Education | AS38393 | 2044 |
| HANASK card | AS45966 | 2042 |
| kongju communication arts university | AS9851 | 1022 |
| Kangnam CableTV | AS9943 | 1022 |
| Korea Data | AS38705 | 1022 |
| Purplestones | AS38661 | 1022 |
| Kunsan National University (KNU) | AS9954 | 1022 |
| WOORI Investment @ Securities | AS9856 | 1022 |
| HCN CHUNGBUK CABLE TV SYSTEMS | AS9319 | 1022 |