163.221.254.0/24
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 163.221.254.0/24 is loaded by JavaScript after the page renders and is not part of this page's HTML. | ||
Reverse DNS List (Total:72)
| IP | Host | DateTime |
|---|---|---|
| 163.221.254.0 | nat-163-221-254-000.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.1 | nat-163-221-254-001.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.2 | nat-163-221-254-002.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.3 | nat-163-221-254-003.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.4 | nat-163-221-254-004.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.5 | nat-163-221-254-005.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.6 | nat-163-221-254-006.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.7 | nat-163-221-254-007.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.8 | nat-163-221-254-008.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.9 | nat-163-221-254-009.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.10 | nat-163-221-254-010.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.11 | nat-163-221-254-011.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.12 | nat-163-221-254-012.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.13 | nat-163-221-254-013.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.14 | nat-163-221-254-014.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.15 | nat-163-221-254-015.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.16 | nat-163-221-254-016.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.17 | nat-163-221-254-017.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.18 | nat-163-221-254-018.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.19 | nat-163-221-254-019.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.20 | nat-163-221-254-020.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.21 | nat-163-221-254-021.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.22 | nat-163-221-254-022.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.23 | nat-163-221-254-023.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.24 | nat-163-221-254-024.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.25 | nat-163-221-254-025.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.26 | nat-163-221-254-026.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.27 | nat-163-221-254-027.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.28 | nat-163-221-254-028.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.29 | nat-163-221-254-029.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.30 | nat-163-221-254-030.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.31 | nat-163-221-254-031.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.32 | nat-163-221-254-032.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.33 | nat-163-221-254-033.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.34 | nat-163-221-254-034.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.35 | nat-163-221-254-035.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.36 | nat-163-221-254-036.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.37 | nat-163-221-254-037.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.38 | nat-163-221-254-038.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.39 | nat-163-221-254-039.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.40 | nat-163-221-254-040.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.41 | nat-163-221-254-041.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.42 | nat-163-221-254-042.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.43 | nat-163-221-254-043.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.44 | nat-163-221-254-044.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.45 | nat-163-221-254-045.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.46 | nat-163-221-254-046.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.47 | nat-163-221-254-047.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.48 | nat-163-221-254-048.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.49 | nat-163-221-254-049.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.50 | nat-163-221-254-050.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.51 | nat-163-221-254-051.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.52 | nat-163-221-254-052.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.53 | nat-163-221-254-053.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.54 | nat-163-221-254-054.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.55 | nat-163-221-254-055.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.56 | nat-163-221-254-056.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.57 | nat-163-221-254-057.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.58 | nat-163-221-254-058.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.59 | nat-163-221-254-059.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.60 | nat-163-221-254-060.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.61 | nat-163-221-254-061.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.62 | nat-163-221-254-062.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.63 | nat-163-221-254-063.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.192 | bwa-epc1.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.193 | bwa-epc2.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.194 | bwa-hss1.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.195 | bwa-hss2.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.196 | bwa-omc1.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.197 | bwa-omc2.naist.jp | 2026-09-13 22:12:30 |
| 163.221.254.198 | bwa-ups1.naist.jp | 2026-09-12 19:02:34 |
| 163.221.254.199 | bwa-ups2.naist.jp | 2026-09-12 19:02:34 |
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 |