Les adresses IP débutant par 145.158.0 sont fournies par SURFnet, elles appartiennent au CIDR (Classless Inter-Domain Routing) 145.128.0.0/10, le bloc IP comprant les adresses de 145.128.0.0 à 145.191.255.255). Le numéro de système autonome (ASN) est 1103.
| ASN | 1103 |
| IP commençant par | 145.128.0.0 |
| IP se terminant par | 145.191.255.255 |
| Nom ASN | SURFnet |
| CDIR | 145.128.0.0/10 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 10/10/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | NL | Pays-Bas | - | Utrecht | 52,0908 | 5,1222 | 2017-10-12 |
| MaxMind | NL | Pays-Bas | - | Utrecht | 52,0938 | 5,1191 | 2017-10-12 |
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 145.158.0.0 | 2443051008 | 0 |
| 145.158.0.1 | 2443051009 | 0 |
| 145.158.0.2 | 2443051010 | 0 |
| 145.158.0.3 | 2443051011 | 0 |
| 145.158.0.4 | 2443051012 | 0 |
| 145.158.0.5 | 2443051013 | 0 |
| 145.158.0.6 | 2443051014 | 0 |
| 145.158.0.7 | 2443051015 | 0 |
| 145.158.0.8 | 2443051016 | 0 |
| 145.158.0.9 | 2443051017 | 0 |
| 145.158.0.10 | 2443051018 | 0 |
| 145.158.0.11 | 2443051019 | 0 |
| 145.158.0.12 | 2443051020 | 0 |
| 145.158.0.13 | 2443051021 | 0 |
| 145.158.0.14 | 2443051022 | 0 |
| 145.158.0.15 | 2443051023 | 0 |
| 145.158.0.16 | 2443051024 | 0 |
| 145.158.0.17 | 2443051025 | 0 |
| 145.158.0.18 | 2443051026 | 0 |
| 145.158.0.19 | 2443051027 | 0 |
| 145.158.0.20 | 2443051028 | 0 |
| 145.158.0.21 | 2443051029 | 0 |
| 145.158.0.22 | 2443051030 | 0 |
| 145.158.0.23 | 2443051031 | 0 |
| 145.158.0.24 | 2443051032 | 0 |
| 145.158.0.25 | 2443051033 | 0 |
| 145.158.0.26 | 2443051034 | 0 |
| 145.158.0.27 | 2443051035 | 0 |
| 145.158.0.28 | 2443051036 | 0 |
| 145.158.0.29 | 2443051037 | 0 |
| 145.158.0.30 | 2443051038 | 0 |
| 145.158.0.31 | 2443051039 | 0 |
| 145.158.0.32 | 2443051040 | 0 |
| 145.158.0.33 | 2443051041 | 0 |
| 145.158.0.34 | 2443051042 | 0 |
| 145.158.0.35 | 2443051043 | 0 |
| 145.158.0.36 | 2443051044 | 0 |
| 145.158.0.37 | 2443051045 | 0 |
| 145.158.0.38 | 2443051046 | 0 |
| 145.158.0.39 | 2443051047 | 0 |
| 145.158.0.40 | 2443051048 | 0 |
| 145.158.0.41 | 2443051049 | 0 |
| 145.158.0.42 | 2443051050 | 0 |
| 145.158.0.43 | 2443051051 | 0 |
| 145.158.0.44 | 2443051052 | 0 |
| 145.158.0.45 | 2443051053 | 0 |
| 145.158.0.46 | 2443051054 | 0 |
| 145.158.0.47 | 2443051055 | 0 |
| 145.158.0.48 | 2443051056 | 0 |
| 145.158.0.49 | 2443051057 | 0 |
| 145.158.0.50 | 2443051058 | 0 |
| 145.158.0.51 | 2443051059 | 0 |
| 145.158.0.52 | 2443051060 | 0 |
| 145.158.0.53 | 2443051061 | 0 |
| 145.158.0.54 | 2443051062 | 0 |
| 145.158.0.55 | 2443051063 | 0 |
| 145.158.0.56 | 2443051064 | 0 |
| 145.158.0.57 | 2443051065 | 0 |
| 145.158.0.58 | 2443051066 | 0 |
| 145.158.0.59 | 2443051067 | 0 |
| 145.158.0.60 | 2443051068 | 0 |
| 145.158.0.61 | 2443051069 | 0 |
| 145.158.0.62 | 2443051070 | 0 |
| 145.158.0.63 | 2443051071 | 0 |
| 145.158.0.64 | 2443051072 | 0 |
| 145.158.0.65 | 2443051073 | 0 |
| 145.158.0.66 | 2443051074 | 0 |
| 145.158.0.67 | 2443051075 | 0 |
| 145.158.0.68 | 2443051076 | 0 |
| 145.158.0.69 | 2443051077 | 0 |
| 145.158.0.70 | 2443051078 | 0 |
| 145.158.0.71 | 2443051079 | 0 |
| 145.158.0.72 | 2443051080 | 0 |
| 145.158.0.73 | 2443051081 | 0 |
| 145.158.0.74 | 2443051082 | 0 |
| 145.158.0.75 | 2443051083 | 0 |
| 145.158.0.76 | 2443051084 | 0 |
| 145.158.0.77 | 2443051085 | 0 |
| 145.158.0.78 | 2443051086 | 0 |
| 145.158.0.79 | 2443051087 | 0 |
| 145.158.0.80 | 2443051088 | 0 |
| 145.158.0.81 | 2443051089 | 0 |
| 145.158.0.82 | 2443051090 | 0 |
| 145.158.0.83 | 2443051091 | 0 |
| 145.158.0.84 | 2443051092 | 0 |
| 145.158.0.85 | 2443051093 | 0 |