L'indirizzo IP 81.90.243 è fornito da , che è di proprietà del CIDR (Classless Inter-Domain Routing) 81.90.240.0/20, IP tra 81.90.240.0 a 81.90.255.255 ). Il numero di sistema autonomo (ASN) è 39761.
| ASN | 39761 |
| IP inizia con | 81.90.240.0 |
| IP finale con | 81.90.255.255 |
| ASN Nome | |
| CDIR | 81.90.240.0/20 |
| IP numerico | |
| Registe | ripencc |
| Ultimo aggiornamento | 05/07/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | CZ | Czech Republic | - | Prague | 50,088 | 14,4208 | 2017-07-05 |
| MaxMind | CZ | Czechia | - | Klanovice | 50,0949 | 14,6689 | 2017-07-05 |
| Whois | CZ | - | - | - | 15 | 50 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.90.243.0 | 1364914944 | 0 |
| 81.90.243.1 | 1364914945 | 0 |
| 81.90.243.2 | 1364914946 | 0 |
| 81.90.243.3 | 1364914947 | 0 |
| 81.90.243.4 | 1364914948 | 0 |
| 81.90.243.5 | 1364914949 | 0 |
| 81.90.243.6 | 1364914950 | 0 |
| 81.90.243.7 | 1364914951 | 0 |
| 81.90.243.8 | 1364914952 | 0 |
| 81.90.243.9 | 1364914953 | 0 |
| 81.90.243.10 | 1364914954 | 0 |
| 81.90.243.11 | 1364914955 | 0 |
| 81.90.243.12 | 1364914956 | 0 |
| 81.90.243.13 | 1364914957 | 0 |
| 81.90.243.14 | 1364914958 | 0 |
| 81.90.243.15 | 1364914959 | 0 |
| 81.90.243.16 | 1364914960 | 0 |
| 81.90.243.17 | 1364914961 | 0 |
| 81.90.243.18 | 1364914962 | 0 |
| 81.90.243.19 | 1364914963 | 0 |
| 81.90.243.20 | 1364914964 | 0 |
| 81.90.243.21 | 1364914965 | 0 |
| 81.90.243.22 | 1364914966 | 0 |
| 81.90.243.23 | 1364914967 | 0 |
| 81.90.243.24 | 1364914968 | 0 |
| 81.90.243.25 | 1364914969 | 0 |
| 81.90.243.26 | 1364914970 | 0 |
| 81.90.243.27 | 1364914971 | 0 |
| 81.90.243.28 | 1364914972 | 0 |
| 81.90.243.29 | 1364914973 | 0 |
| 81.90.243.30 | 1364914974 | 0 |
| 81.90.243.31 | 1364914975 | 0 |
| 81.90.243.32 | 1364914976 | 0 |
| 81.90.243.33 | 1364914977 | 0 |
| 81.90.243.34 | 1364914978 | 0 |
| 81.90.243.35 | 1364914979 | 0 |
| 81.90.243.36 | 1364914980 | 0 |
| 81.90.243.37 | 1364914981 | 0 |
| 81.90.243.38 | 1364914982 | 0 |
| 81.90.243.39 | 1364914983 | 0 |
| 81.90.243.40 | 1364914984 | 0 |
| 81.90.243.41 | 1364914985 | 0 |
| 81.90.243.42 | 1364914986 | 0 |
| 81.90.243.43 | 1364914987 | 0 |
| 81.90.243.44 | 1364914988 | 0 |
| 81.90.243.45 | 1364914989 | 0 |
| 81.90.243.46 | 1364914990 | 0 |
| 81.90.243.47 | 1364914991 | 0 |
| 81.90.243.48 | 1364914992 | 0 |
| 81.90.243.49 | 1364914993 | 0 |
| 81.90.243.50 | 1364914994 | 0 |
| 81.90.243.51 | 1364914995 | 0 |
| 81.90.243.52 | 1364914996 | 0 |
| 81.90.243.53 | 1364914997 | 0 |
| 81.90.243.54 | 1364914998 | 0 |
| 81.90.243.55 | 1364914999 | 0 |
| 81.90.243.56 | 1364915000 | 0 |
| 81.90.243.57 | 1364915001 | 0 |
| 81.90.243.58 | 1364915002 | 0 |
| 81.90.243.59 | 1364915003 | 0 |
| 81.90.243.60 | 1364915004 | 0 |
| 81.90.243.61 | 1364915005 | 0 |
| 81.90.243.62 | 1364915006 | 0 |
| 81.90.243.63 | 1364915007 | 0 |
| 81.90.243.64 | 1364915008 | 0 |
| 81.90.243.65 | 1364915009 | 0 |
| 81.90.243.66 | 1364915010 | 0 |
| 81.90.243.67 | 1364915011 | 0 |
| 81.90.243.68 | 1364915012 | 0 |
| 81.90.243.69 | 1364915013 | 0 |
| 81.90.243.70 | 1364915014 | 0 |
| 81.90.243.71 | 1364915015 | 0 |
| 81.90.243.72 | 1364915016 | 0 |
| 81.90.243.73 | 1364915017 | 0 |
| 81.90.243.74 | 1364915018 | 0 |
| 81.90.243.75 | 1364915019 | 0 |
| 81.90.243.76 | 1364915020 | 0 |
| 81.90.243.77 | 1364915021 | 0 |
| 81.90.243.78 | 1364915022 | 0 |
| 81.90.243.79 | 1364915023 | 0 |
| 81.90.243.80 | 1364915024 | 0 |
| 81.90.243.81 | 1364915025 | 0 |
| 81.90.243.82 | 1364915026 | 0 |
| 81.90.243.83 | 1364915027 | 0 |
| 81.90.243.84 | 1364915028 | 0 |
| 81.90.243.85 | 1364915029 | 0 |