Les adresses IP débutant par 145.73.80 sont fournies par SURFnet, elles appartiennent au CIDR (Classless Inter-Domain Routing) 145.74.0.0/15, le bloc IP comprant les adresses de 145.74.0.0 à 145.75.255.255). Le numéro de système autonome (ASN) est 1103.
| ASN | 1103 |
| IP commençant par | 145.74.0.0 |
| IP se terminant par | 145.75.255.255 |
| Nom ASN | SURFnet |
| CDIR | 145.74.0.0/15 |
| IP numérique | |
| Registe | ripencc |
| Dernière mise à jour | 20/05/2019 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | NL | Pays-Bas | - | Arnhem | 51,98 | 5,9111 | 2019-05-19 |
| MaxMind | NL | Pays-Bas | - | Arnhem | 51,9798 | 5,9256 | 2019-05-19 |
| Whois | NL | - | - | - | 5 | 52 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 145.73.80.0 | 2437500928 | 0 |
| 145.73.80.1 | 2437500929 | 0 |
| 145.73.80.2 | 2437500930 | 0 |
| 145.73.80.3 | 2437500931 | 0 |
| 145.73.80.4 | 2437500932 | 0 |
| 145.73.80.5 | 2437500933 | 0 |
| 145.73.80.6 | 2437500934 | 0 |
| 145.73.80.7 | 2437500935 | 0 |
| 145.73.80.8 | 2437500936 | 0 |
| 145.73.80.9 | 2437500937 | 0 |
| 145.73.80.10 | 2437500938 | 0 |
| 145.73.80.11 | 2437500939 | 0 |
| 145.73.80.12 | 2437500940 | 0 |
| 145.73.80.13 | 2437500941 | 0 |
| 145.73.80.14 | 2437500942 | 0 |
| 145.73.80.15 | 2437500943 | 0 |
| 145.73.80.16 | 2437500944 | 0 |
| 145.73.80.17 | 2437500945 | 0 |
| 145.73.80.18 | 2437500946 | 0 |
| 145.73.80.19 | 2437500947 | 0 |
| 145.73.80.20 | 2437500948 | 0 |
| 145.73.80.21 | 2437500949 | 0 |
| 145.73.80.22 | 2437500950 | 0 |
| 145.73.80.23 | 2437500951 | 0 |
| 145.73.80.24 | 2437500952 | 0 |
| 145.73.80.25 | 2437500953 | 0 |
| 145.73.80.26 | 2437500954 | 0 |
| 145.73.80.27 | 2437500955 | 0 |
| 145.73.80.28 | 2437500956 | 0 |
| 145.73.80.29 | 2437500957 | 0 |
| 145.73.80.30 | 2437500958 | 0 |
| 145.73.80.31 | 2437500959 | 0 |
| 145.73.80.32 | 2437500960 | 0 |
| 145.73.80.33 | 2437500961 | 0 |
| 145.73.80.34 | 2437500962 | 0 |
| 145.73.80.35 | 2437500963 | 0 |
| 145.73.80.36 | 2437500964 | 0 |
| 145.73.80.37 | 2437500965 | 0 |
| 145.73.80.38 | 2437500966 | 0 |
| 145.73.80.39 | 2437500967 | 0 |
| 145.73.80.40 | 2437500968 | 0 |
| 145.73.80.41 | 2437500969 | 0 |
| 145.73.80.42 | 2437500970 | 0 |
| 145.73.80.43 | 2437500971 | 0 |
| 145.73.80.44 | 2437500972 | 0 |
| 145.73.80.45 | 2437500973 | 0 |
| 145.73.80.46 | 2437500974 | 0 |
| 145.73.80.47 | 2437500975 | 0 |
| 145.73.80.48 | 2437500976 | 0 |
| 145.73.80.49 | 2437500977 | 0 |
| 145.73.80.50 | 2437500978 | 0 |
| 145.73.80.51 | 2437500979 | 0 |
| 145.73.80.52 | 2437500980 | 0 |
| 145.73.80.53 | 2437500981 | 0 |
| 145.73.80.54 | 2437500982 | 0 |
| 145.73.80.55 | 2437500983 | 0 |
| 145.73.80.56 | 2437500984 | 0 |
| 145.73.80.57 | 2437500985 | 0 |
| 145.73.80.58 | 2437500986 | 0 |
| 145.73.80.59 | 2437500987 | 0 |
| 145.73.80.60 | 2437500988 | 0 |
| 145.73.80.61 | 2437500989 | 0 |
| 145.73.80.62 | 2437500990 | 0 |
| 145.73.80.63 | 2437500991 | 0 |
| 145.73.80.64 | 2437500992 | 0 |
| 145.73.80.65 | 2437500993 | 0 |
| 145.73.80.66 | 2437500994 | 0 |
| 145.73.80.67 | 2437500995 | 0 |
| 145.73.80.68 | 2437500996 | 0 |
| 145.73.80.69 | 2437500997 | 0 |
| 145.73.80.70 | 2437500998 | 0 |
| 145.73.80.71 | 2437500999 | 0 |
| 145.73.80.72 | 2437501000 | 0 |
| 145.73.80.73 | 2437501001 | 0 |
| 145.73.80.74 | 2437501002 | 0 |
| 145.73.80.75 | 2437501003 | 0 |
| 145.73.80.76 | 2437501004 | 0 |
| 145.73.80.77 | 2437501005 | 0 |
| 145.73.80.78 | 2437501006 | 0 |
| 145.73.80.79 | 2437501007 | 0 |
| 145.73.80.80 | 2437501008 | 0 |
| 145.73.80.81 | 2437501009 | 0 |
| 145.73.80.82 | 2437501010 | 0 |
| 145.73.80.83 | 2437501011 | 0 |
| 145.73.80.84 | 2437501012 | 0 |
| 145.73.80.85 | 2437501013 | 0 |