163.221.4.0/24
BGP Announced
| AS | CIDR | Description |
|---|---|---|
| AS131158 |
163.221.0.0/16
|
NAIST-AS - Nara Institute of Science and Technology, National University Corporation, JP |
Real Time BGP Data
| AS / Info | Prefix | AS Path |
|---|---|---|
| Real-time BGP data for 163.221.4.0/24 is loaded by JavaScript after the page renders and is not part of this page's HTML. | ||
Reverse DNS List (Total:60)
| IP | Host | DateTime |
|---|---|---|
| 163.221.4.1 | qfx-itc1-v600.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.2 | sys34-arista1-v600.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.3 | sys34-arista2-v600.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.9 | qfx-itc2-v602.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.10 | sys34-arista1-v602.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.11 | sys34-arista2-v602.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.17 | ex-core2-v604.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.18 | sys28-arista1-v604.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.19 | sys28-arista2-v604.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.25 | qfx-mdc-c1-v606.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.26 | sys28-arista1-v606.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.27 | sys28-arista2-v606.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.33 | ex-core2-v608.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.34 | sys30-arista1-v608.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.35 | sys30-arista2-v608.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.41 | ex-core1-v610.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.42 | sys30-arista1-v610.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.43 | sys30-arista2-v610.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.192 | ex-core1-v664.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.193 | sys29-juniper1-v664.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.194 | ex-core2-v665.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.195 | sys29-juniper1-v665.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.196 | ex-core1-v666.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.197 | sys29-juniper1-v666.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.198 | ex-core2-v667.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.199 | sys29-juniper1-v667.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.200 | sys30-arista1-v668.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.201 | sys30-arista2-v668.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.204 | qfx-itc1-v670.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.205 | cc21-sw1-v670.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.206 | qfx-itc2-v671.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.207 | cc21-sw1-v671.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.208 | ex-core1-v672.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.209 | sys31-arista1-v672.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.210 | ex-core2-v673.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.211 | sys31-arista2-v673.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.212 | sys31-arista1-v674.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.213 | sys31-arista2-v674.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.214 | sys31-arista1-v675.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.215 | sys31-arista2-v675.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.216 | ex-core1-v676.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.217 | sys32-wlan-is-v676.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.218 | ex-core2-v677.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.219 | sys32-wlan-is-v677.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.220 | ex-core1-v678.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.221 | sys33-juniper1-v678.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.222 | ex-core2-v679.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.223 | sys33-juniper1-v679.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.224 | ex-core1-v680.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.225 | sys33-juniper1-v680.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.226 | ex-core2-v681.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.227 | sys33-juniper1-v681.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.228 | ex-core1-v682.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.229 | sys34-arista1-v682.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.230 | ex-core2-v683.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.231 | sys34-arista2-v683.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.232 | sys34-arista1-v684.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.233 | sys34-arista2-v684.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.234 | sys34-arista1-v685.naist.jp | 2026-09-12 18:57:24 |
| 163.221.4.235 | sys34-arista2-v685.naist.jp | 2026-09-12 18:57:24 |
Top 20 / total ASN
| Country / Region | Allocated ASNs | ASN IPv4 Number | ASN IPv6 Number(/64) |
|---|---|---|---|
United States
|
32219 | 1497299200 | 975910303763789 |
Brazil
|
9157 | 77606656 | 31373490721038 |
China
|
6582 | 356442368 | 148181518405677 |
India
|
6264 | 35222528 | 24757297422338 |
Russian Federation
|
5752 | 47281664 | 11487351490128 |
Indonesia
|
3995 | 11931904 | 1335890477063 |
Germany
|
3253 | 114097664 | 72219796635914 |
United Kingdom
|
3148 | 71173888 | 33263329673219 |
Australia
|
3042 | 40737792 | 20616764002310 |
Canada
|
2518 | 54993920 | 4262402850822 |
Poland
|
2465 | 19310592 | 14416672134154 |
France
|
2174 | 74868480 | 12994736816131 |
Ukraine
|
2014 | 8336384 | 5178559168512 |
Bangladesh
|
2002 | 2099968 | 1166247198721 |
Netherlands
|
1619 | 51557120 | 19177824780814 |
Hong Kong
|
1363 | 20882176 | 5802796253456 |
Argentina
|
1349 | 18638848 | 19658027630592 |
Italy
|
1317 | 52913664 | 29680064266240 |
Japan
|
1277 | 161360384 | 33661432037381 |
Republic of Korea
|
1177 | 112819456 | 17726344724493 |