Les adresses IP débutant par 81.20.237 sont fournies par Helsinki, Finland, elles appartiennent au CIDR (Classless Inter-Domain Routing) 81.20.224.0/20, le bloc IP comprant les adresses de 81.20.224.0 à 81.20.239.255). Le numéro de système autonome (ASN) est 3274.
| ASN | 3274 |
| IP commençant par | 81.20.224.0 |
| IP se terminant par | 81.20.239.255 |
| Nom ASN | Helsinki, Finland |
| CDIR | 81.20.224.0/20 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 09/07/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | FI | Finlande | - | Espoo | 60,2052 | 24,6522 | 2017-07-03 |
| MaxMind | FI | Finlande | - | - | 60,1708 | 24,9375 | 2017-07-03 |
| Whois | FI | - | - | - | 26 | 62 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 81.20.237.0 | 1360325888 | 0 |
| 81.20.237.1 | 1360325889 | 0 |
| 81.20.237.2 | 1360325890 | 0 |
| 81.20.237.3 | 1360325891 | 0 |
| 81.20.237.4 | 1360325892 | 0 |
| 81.20.237.5 | 1360325893 | 0 |
| 81.20.237.6 | 1360325894 | 0 |
| 81.20.237.7 | 1360325895 | 0 |
| 81.20.237.8 | 1360325896 | 0 |
| 81.20.237.9 | 1360325897 | 0 |
| 81.20.237.10 | 1360325898 | 0 |
| 81.20.237.11 | 1360325899 | 0 |
| 81.20.237.12 | 1360325900 | 0 |
| 81.20.237.13 | 1360325901 | 0 |
| 81.20.237.14 | 1360325902 | 0 |
| 81.20.237.15 | 1360325903 | 0 |
| 81.20.237.16 | 1360325904 | 0 |
| 81.20.237.17 | 1360325905 | 0 |
| 81.20.237.18 | 1360325906 | 0 |
| 81.20.237.19 | 1360325907 | 0 |
| 81.20.237.20 | 1360325908 | 0 |
| 81.20.237.21 | 1360325909 | 0 |
| 81.20.237.22 | 1360325910 | 0 |
| 81.20.237.23 | 1360325911 | 0 |
| 81.20.237.24 | 1360325912 | 0 |
| 81.20.237.25 | 1360325913 | 0 |
| 81.20.237.26 | 1360325914 | 0 |
| 81.20.237.27 | 1360325915 | 0 |
| 81.20.237.28 | 1360325916 | 0 |
| 81.20.237.29 | 1360325917 | 0 |
| 81.20.237.30 | 1360325918 | 0 |
| 81.20.237.31 | 1360325919 | 0 |
| 81.20.237.32 | 1360325920 | 0 |
| 81.20.237.33 | 1360325921 | 0 |
| 81.20.237.34 | 1360325922 | 0 |
| 81.20.237.35 | 1360325923 | 0 |
| 81.20.237.36 | 1360325924 | 0 |
| 81.20.237.37 | 1360325925 | 0 |
| 81.20.237.38 | 1360325926 | 0 |
| 81.20.237.39 | 1360325927 | 0 |
| 81.20.237.40 | 1360325928 | 0 |
| 81.20.237.41 | 1360325929 | 0 |
| 81.20.237.42 | 1360325930 | 0 |
| 81.20.237.43 | 1360325931 | 0 |
| 81.20.237.44 | 1360325932 | 0 |
| 81.20.237.45 | 1360325933 | 0 |
| 81.20.237.46 | 1360325934 | 0 |
| 81.20.237.47 | 1360325935 | 0 |
| 81.20.237.48 | 1360325936 | 0 |
| 81.20.237.49 | 1360325937 | 0 |
| 81.20.237.50 | 1360325938 | 0 |
| 81.20.237.51 | 1360325939 | 0 |
| 81.20.237.52 | 1360325940 | 0 |
| 81.20.237.53 | 1360325941 | 0 |
| 81.20.237.54 | 1360325942 | 0 |
| 81.20.237.55 | 1360325943 | 0 |
| 81.20.237.56 | 1360325944 | 0 |
| 81.20.237.57 | 1360325945 | 0 |
| 81.20.237.58 | 1360325946 | 0 |
| 81.20.237.59 | 1360325947 | 0 |
| 81.20.237.60 | 1360325948 | 0 |
| 81.20.237.61 | 1360325949 | 0 |
| 81.20.237.62 | 1360325950 | 0 |
| 81.20.237.63 | 1360325951 | 0 |
| 81.20.237.64 | 1360325952 | 0 |
| 81.20.237.65 | 1360325953 | 0 |
| 81.20.237.66 | 1360325954 | 0 |
| 81.20.237.67 | 1360325955 | 0 |
| 81.20.237.68 | 1360325956 | 0 |
| 81.20.237.69 | 1360325957 | 0 |
| 81.20.237.70 | 1360325958 | 0 |
| 81.20.237.71 | 1360325959 | 0 |
| 81.20.237.72 | 1360325960 | 0 |
| 81.20.237.73 | 1360325961 | 0 |
| 81.20.237.74 | 1360325962 | 0 |
| 81.20.237.75 | 1360325963 | 0 |
| 81.20.237.76 | 1360325964 | 0 |
| 81.20.237.77 | 1360325965 | 0 |
| 81.20.237.78 | 1360325966 | 0 |
| 81.20.237.79 | 1360325967 | 0 |
| 81.20.237.80 | 1360325968 | 0 |
| 81.20.237.81 | 1360325969 | 0 |
| 81.20.237.82 | 1360325970 | 0 |
| 81.20.237.83 | 1360325971 | 0 |
| 81.20.237.84 | 1360325972 | 0 |
| 81.20.237.85 | 1360325973 | 0 |