IP / ASN / Domain Lookup
IP Lookup Result
IP Address
81.23.240.0castornetworks.com.
Location
The Netherlands,North Holland,Amsterdam
ASN
Company
ISP
Castor Communications BV
Longitude
4.8985
4.8985
Latitude
52.373
52.373
Native IP
Residential
25%Risk Score
25% Risk Score
IP Address (Decimal)
1360523264
Latency
US
-
HK
-
CA
-
GB
-
DE
-
AU
-
ASN History
ASN History | Network | AS Organization | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 81.23.240.0/23 | ISP Castor Communications BV | Netherlands | 📅 2021-09-23 02:27 | 📅 2025-10-20 03:08 | |
| 81.23.240.0/21 | ENT Garnier Projects BV | Netherlands | 📅 2020-01-02 03:42 | 📅 2021-09-16 15:58 | |
| 81.23.240.0/23 | ENT Garnier Projects BV | Netherlands | 📅 2020-09-25 23:22 | 📅 2021-05-26 11:58 | |
| 81.23.224.0/19 | ENT Garnier Projects BV | Netherlands | 📅 2003-05-04 00:27 | 📅 2018-12-26 05:00 | |
| 81.0.0.0/8 | UNK Turon Media XK | Uzbekistan | 📅 2017-04-27 11:11 | 📅 2017-04-27 16:34 | |
| 81.23.240.0/20 | ENT Garnier Projects BV | Netherlands | 📅 2002-11-05 21:20 | 📅 2004-02-06 09:30 | |
| 81.0.0.0/8 | ISP Black HOST Ltd | Canada | 📅 2004-01-24 17:27 | 📅 2004-01-29 05:13 | |
| 81.0.0.0/8 | UNK Interpol | France | 📅 2004-01-08 17:59 | 📅 2004-01-08 18:19 | |
| 81.0.0.0/8 | ISP Telia Company AB | Sweden | 📅 2003-03-13 12:59 | 📅 2003-12-16 14:26 | |
| 81.0.0.0/8 | ISP New Skies Satellites, Inc. | United States | 📅 2003-02-05 07:39 | 📅 2003-10-19 09:35 | |
| 81.0.0.0/8 | ISP JSC Orient-Telecom | Russia | 📅 2003-09-08 16:34 | 📅 2003-09-09 19:02 | |
| 81.0.0.0/8 | UNK CIRCUITOS ALJARAFE, S.L. | Spain | 📅 2002-06-21 18:36 | 📅 2003-07-03 01:52 | |
| 81.0.0.0/8 | UNK Unknown | -- | 📅 2003-07-01 00:12 | 📅 2003-07-02 16:38 | |
| 81.0.0.0/8 | ISP DIC Online Wolf Ltd & Co. KG | Austria | 📅 2003-05-03 20:11 | 📅 2003-05-05 02:16 | |
| 81.23.240.0/22 | ENT Garnier Projects BV | Netherlands | 📅 2002-11-15 18:30 | 📅 2003-02-27 19:30 | |
| 81.0.0.0/8 | ENT Corelia SAS | France | 📅 2003-02-19 23:59 | 📅 2003-02-20 00:35 | |
| 81.0.0.0/8 | ISP "Uzbektelekom" Joint Stock Company | Uzbekistan | 📅 2002-12-12 13:37 | 📅 2002-12-12 13:40 | |
| 81.0.0.0/8 | ISP JC LLC Sarkor-Telecom | Uzbekistan | 📅 2002-11-11 18:08 | 📅 2002-11-20 21:23 | |
| 81.0.0.0/8 | ISP JSC RTComm.RU | Russia | 📅 2002-08-01 13:59 | 📅 2002-08-01 15:17 | |
| 81.0.0.0/8 | UNK Unknown | -- | 📅 2002-07-15 21:19 | 📅 2002-07-16 19:55 | |
| 81.0.0.0/8 | ISP TATA Communications (Canada) Ltd. | Canada | 📅 2002-04-23 17:59 | 📅 2002-04-25 04:18 | |
| 81.0.0.0/8 | UNK Unknown | -- | 📅 2002-03-17 18:33 | 📅 2002-03-17 20:10 | |
| 81.0.0.0/8 | UNK Unknown | -- | 📅 2002-02-26 07:59 | 📅 2002-02-26 08:00 |
Company History
Company History | Network | First Seen | Last Seen |
|---|---|---|---|
ENT 81-RIPE | 81.0.0.0/8 | 📅 2025-02-10 08:00 | 📅 2025-11-03 17:45 |
ISP NL-CASTOR-20021105 | 81.23.240.0/23 | 📅 2021-04-16 14:32 | 📅 2025-10-20 03:08 |
Registration History
Status | Network | Registry | Country | First Seen | Last Seen |
|---|---|---|---|---|---|
| 81.0.0.0/8 |  ARIN | -- | 📅 2025-02-10 08:00 | 📅 2025-11-03 17:45 | |
| 81.23.240.0/23 |  RIPE | Netherlands | 📅 2021-04-16 14:32 | 📅 2025-10-20 03:08 |
