Les adresses IP débutant par 145.89.89 sont fournies par SURFnet, elles appartiennent au CIDR (Classless Inter-Domain Routing) 145.88.0.0/15, le bloc IP comprant les adresses de 145.88.0.0 à 145.89.255.255). Le numéro de système autonome (ASN) est 1103.
| ASN | 1103 |
| IP commençant par | 145.88.0.0 |
| IP se terminant par | 145.89.255.255 |
| Nom ASN | SURFnet |
| CDIR | 145.88.0.0/15 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 12/05/2019 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | NL | Pays-Bas | - | Amsterdam | 52,374 | 4,8897 | 2019-05-12 |
| MaxMind | NL | Pays-Bas | - | Wijk bij Duurstede | 51,9729 | 5,3316 | 2019-05-12 |
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 145.89.89.0 | 2438551808 | 0 |
| 145.89.89.1 | 2438551809 | 0 |
| 145.89.89.2 | 2438551810 | 0 |
| 145.89.89.3 | 2438551811 | 0 |
| 145.89.89.4 | 2438551812 | 0 |
| 145.89.89.5 | 2438551813 | 0 |
| 145.89.89.6 | 2438551814 | 0 |
| 145.89.89.7 | 2438551815 | 0 |
| 145.89.89.8 | 2438551816 | 0 |
| 145.89.89.9 | 2438551817 | 0 |
| 145.89.89.10 | 2438551818 | 0 |
| 145.89.89.11 | 2438551819 | 0 |
| 145.89.89.12 | 2438551820 | 0 |
| 145.89.89.13 | 2438551821 | 0 |
| 145.89.89.14 | 2438551822 | 0 |
| 145.89.89.15 | 2438551823 | 0 |
| 145.89.89.16 | 2438551824 | 0 |
| 145.89.89.17 | 2438551825 | 0 |
| 145.89.89.18 | 2438551826 | 0 |
| 145.89.89.19 | 2438551827 | 0 |
| 145.89.89.20 | 2438551828 | 0 |
| 145.89.89.21 | 2438551829 | 0 |
| 145.89.89.22 | 2438551830 | 0 |
| 145.89.89.23 | 2438551831 | 0 |
| 145.89.89.24 | 2438551832 | 0 |
| 145.89.89.25 | 2438551833 | 0 |
| 145.89.89.26 | 2438551834 | 0 |
| 145.89.89.27 | 2438551835 | 0 |
| 145.89.89.28 | 2438551836 | 0 |
| 145.89.89.29 | 2438551837 | 0 |
| 145.89.89.30 | 2438551838 | 0 |
| 145.89.89.31 | 2438551839 | 0 |
| 145.89.89.32 | 2438551840 | 0 |
| 145.89.89.33 | 2438551841 | 0 |
| 145.89.89.34 | 2438551842 | 0 |
| 145.89.89.35 | 2438551843 | 0 |
| 145.89.89.36 | 2438551844 | 0 |
| 145.89.89.37 | 2438551845 | 0 |
| 145.89.89.38 | 2438551846 | 0 |
| 145.89.89.39 | 2438551847 | 0 |
| 145.89.89.40 | 2438551848 | 0 |
| 145.89.89.41 | 2438551849 | 0 |
| 145.89.89.42 | 2438551850 | 0 |
| 145.89.89.43 | 2438551851 | 0 |
| 145.89.89.44 | 2438551852 | 0 |
| 145.89.89.45 | 2438551853 | 0 |
| 145.89.89.46 | 2438551854 | 0 |
| 145.89.89.47 | 2438551855 | 0 |
| 145.89.89.48 | 2438551856 | 0 |
| 145.89.89.49 | 2438551857 | 0 |
| 145.89.89.50 | 2438551858 | 0 |
| 145.89.89.51 | 2438551859 | 0 |
| 145.89.89.52 | 2438551860 | 0 |
| 145.89.89.53 | 2438551861 | 0 |
| 145.89.89.54 | 2438551862 | 0 |
| 145.89.89.55 | 2438551863 | 0 |
| 145.89.89.56 | 2438551864 | 0 |
| 145.89.89.57 | 2438551865 | 0 |
| 145.89.89.58 | 2438551866 | 0 |
| 145.89.89.59 | 2438551867 | 0 |
| 145.89.89.60 | 2438551868 | 0 |
| 145.89.89.61 | 2438551869 | 0 |
| 145.89.89.62 | 2438551870 | 0 |
| 145.89.89.63 | 2438551871 | 0 |
| 145.89.89.64 | 2438551872 | 0 |
| 145.89.89.65 | 2438551873 | 0 |
| 145.89.89.66 | 2438551874 | 0 |
| 145.89.89.67 | 2438551875 | 0 |
| 145.89.89.68 | 2438551876 | 0 |
| 145.89.89.69 | 2438551877 | 0 |
| 145.89.89.70 | 2438551878 | 0 |
| 145.89.89.71 | 2438551879 | 0 |
| 145.89.89.72 | 2438551880 | 0 |
| 145.89.89.73 | 2438551881 | 0 |
| 145.89.89.74 | 2438551882 | 0 |
| 145.89.89.75 | 2438551883 | 0 |
| 145.89.89.76 | 2438551884 | 0 |
| 145.89.89.77 | 2438551885 | 0 |
| 145.89.89.78 | 2438551886 | 0 |
| 145.89.89.79 | 2438551887 | 0 |
| 145.89.89.80 | 2438551888 | 0 |
| 145.89.89.81 | 2438551889 | 0 |
| 145.89.89.82 | 2438551890 | 0 |
| 145.89.89.83 | 2438551891 | 0 |
| 145.89.89.84 | 2438551892 | 0 |
| 145.89.89.85 | 2438551893 | 0 |