L'indirizzo IP 145.21.13 è fornito da SURFnet, che è di proprietà del CIDR (Classless Inter-Domain Routing) 145.23.0.0/16, IP tra 145.23.0.0 a 145.23.255.255 ). Il numero di sistema autonomo (ASN) è 1103.
| ASN | 1103 |
| IP inizia con | 145.23.0.0 |
| IP finale con | 145.23.255.255 |
| ASN Nome | SURFnet |
| CDIR | 145.23.0.0/16 |
| IP numerico | |
| Registe | ripencc |
| Ultimo aggiornamento | 31/12/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | NL | Netherlands | - | Dordrecht | 51,81 | 4,6736 | 2018-12-30 |
| MaxMind | NL | Netherlands | - | Dordrecht | 51,8007 | 4,6982 | 2018-12-30 |
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 145.21.13.0 | 2434075904 | 0 |
| 145.21.13.1 | 2434075905 | 0 |
| 145.21.13.2 | 2434075906 | 0 |
| 145.21.13.3 | 2434075907 | 0 |
| 145.21.13.4 | 2434075908 | 0 |
| 145.21.13.5 | 2434075909 | 0 |
| 145.21.13.6 | 2434075910 | 0 |
| 145.21.13.7 | 2434075911 | 0 |
| 145.21.13.8 | 2434075912 | 0 |
| 145.21.13.9 | 2434075913 | 0 |
| 145.21.13.10 | 2434075914 | 0 |
| 145.21.13.11 | 2434075915 | 0 |
| 145.21.13.12 | 2434075916 | 0 |
| 145.21.13.13 | 2434075917 | 0 |
| 145.21.13.14 | 2434075918 | 0 |
| 145.21.13.15 | 2434075919 | 0 |
| 145.21.13.16 | 2434075920 | 0 |
| 145.21.13.17 | 2434075921 | 0 |
| 145.21.13.18 | 2434075922 | 0 |
| 145.21.13.19 | 2434075923 | 0 |
| 145.21.13.20 | 2434075924 | 0 |
| 145.21.13.21 | 2434075925 | 0 |
| 145.21.13.22 | 2434075926 | 0 |
| 145.21.13.23 | 2434075927 | 0 |
| 145.21.13.24 | 2434075928 | 0 |
| 145.21.13.25 | 2434075929 | 0 |
| 145.21.13.26 | 2434075930 | 0 |
| 145.21.13.27 | 2434075931 | 0 |
| 145.21.13.28 | 2434075932 | 0 |
| 145.21.13.29 | 2434075933 | 0 |
| 145.21.13.30 | 2434075934 | 0 |
| 145.21.13.31 | 2434075935 | 0 |
| 145.21.13.32 | 2434075936 | 0 |
| 145.21.13.33 | 2434075937 | 0 |
| 145.21.13.34 | 2434075938 | 0 |
| 145.21.13.35 | 2434075939 | 0 |
| 145.21.13.36 | 2434075940 | 0 |
| 145.21.13.37 | 2434075941 | 0 |
| 145.21.13.38 | 2434075942 | 0 |
| 145.21.13.39 | 2434075943 | 0 |
| 145.21.13.40 | 2434075944 | 0 |
| 145.21.13.41 | 2434075945 | 0 |
| 145.21.13.42 | 2434075946 | 0 |
| 145.21.13.43 | 2434075947 | 0 |
| 145.21.13.44 | 2434075948 | 0 |
| 145.21.13.45 | 2434075949 | 0 |
| 145.21.13.46 | 2434075950 | 0 |
| 145.21.13.47 | 2434075951 | 0 |
| 145.21.13.48 | 2434075952 | 0 |
| 145.21.13.49 | 2434075953 | 0 |
| 145.21.13.50 | 2434075954 | 0 |
| 145.21.13.51 | 2434075955 | 0 |
| 145.21.13.52 | 2434075956 | 0 |
| 145.21.13.53 | 2434075957 | 0 |
| 145.21.13.54 | 2434075958 | 0 |
| 145.21.13.55 | 2434075959 | 0 |
| 145.21.13.56 | 2434075960 | 0 |
| 145.21.13.57 | 2434075961 | 0 |
| 145.21.13.58 | 2434075962 | 0 |
| 145.21.13.59 | 2434075963 | 0 |
| 145.21.13.60 | 2434075964 | 0 |
| 145.21.13.61 | 2434075965 | 0 |
| 145.21.13.62 | 2434075966 | 0 |
| 145.21.13.63 | 2434075967 | 0 |
| 145.21.13.64 | 2434075968 | 0 |
| 145.21.13.65 | 2434075969 | 0 |
| 145.21.13.66 | 2434075970 | 0 |
| 145.21.13.67 | 2434075971 | 0 |
| 145.21.13.68 | 2434075972 | 0 |
| 145.21.13.69 | 2434075973 | 0 |
| 145.21.13.70 | 2434075974 | 0 |
| 145.21.13.71 | 2434075975 | 0 |
| 145.21.13.72 | 2434075976 | 0 |
| 145.21.13.73 | 2434075977 | 0 |
| 145.21.13.74 | 2434075978 | 0 |
| 145.21.13.75 | 2434075979 | 0 |
| 145.21.13.76 | 2434075980 | 0 |
| 145.21.13.77 | 2434075981 | 0 |
| 145.21.13.78 | 2434075982 | 0 |
| 145.21.13.79 | 2434075983 | 0 |
| 145.21.13.80 | 2434075984 | 0 |
| 145.21.13.81 | 2434075985 | 0 |
| 145.21.13.82 | 2434075986 | 0 |
| 145.21.13.83 | 2434075987 | 0 |
| 145.21.13.84 | 2434075988 | 0 |
| 145.21.13.85 | 2434075989 | 0 |