The IP address 37.12.21 is provided by TELEFONICA_DE_ESPANA, it's belong to the CDIR (Classless Inter-Domain Routing) 37.12.0.0/16 (range 37.12.0.0 to 37.12.255.255). The autonomous system number (ASN) is 3352.
| ASN | 3352 |
| IP starting by | 37.12.0.0 |
| IP ending by | 37.12.255.255 |
| ASN Name | TELEFONICA_DE_ESPANA |
| CDIR | 37.12.0.0/16 |
| Numerical IP | |
| Registry | ripencc |
| Last update | 17/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | ES | Spain | - | Salamanca | 40.9667 | -5.65 | 2017-07-17 |
| MaxMind | ES | Spain | - | - | 40.4172 | -3.684 | 2017-07-17 |
| Whois | ES | - | - | - | -4 | 40 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 37.12.21.0 | 621548800 | 0 |
| 37.12.21.1 | 621548801 | 0 |
| 37.12.21.2 | 621548802 | 0 |
| 37.12.21.3 | 621548803 | 0 |
| 37.12.21.4 | 621548804 | 0 |
| 37.12.21.5 | 621548805 | 0 |
| 37.12.21.6 | 621548806 | 0 |
| 37.12.21.7 | 621548807 | 0 |
| 37.12.21.8 | 621548808 | 0 |
| 37.12.21.9 | 621548809 | 0 |
| 37.12.21.10 | 621548810 | 0 |
| 37.12.21.11 | 621548811 | 0 |
| 37.12.21.12 | 621548812 | 0 |
| 37.12.21.13 | 621548813 | 0 |
| 37.12.21.14 | 621548814 | 0 |
| 37.12.21.15 | 621548815 | 0 |
| 37.12.21.16 | 621548816 | 0 |
| 37.12.21.17 | 621548817 | 0 |
| 37.12.21.18 | 621548818 | 0 |
| 37.12.21.19 | 621548819 | 0 |
| 37.12.21.20 | 621548820 | 0 |
| 37.12.21.21 | 621548821 | 0 |
| 37.12.21.22 | 621548822 | 0 |
| 37.12.21.23 | 621548823 | 0 |
| 37.12.21.24 | 621548824 | 0 |
| 37.12.21.25 | 621548825 | 0 |
| 37.12.21.26 | 621548826 | 0 |
| 37.12.21.27 | 621548827 | 0 |
| 37.12.21.28 | 621548828 | 0 |
| 37.12.21.29 | 621548829 | 0 |
| 37.12.21.30 | 621548830 | 0 |
| 37.12.21.31 | 621548831 | 0 |
| 37.12.21.32 | 621548832 | 0 |
| 37.12.21.33 | 621548833 | 0 |
| 37.12.21.34 | 621548834 | 0 |
| 37.12.21.35 | 621548835 | 0 |
| 37.12.21.36 | 621548836 | 0 |
| 37.12.21.37 | 621548837 | 0 |
| 37.12.21.38 | 621548838 | 0 |
| 37.12.21.39 | 621548839 | 0 |
| 37.12.21.40 | 621548840 | 0 |
| 37.12.21.41 | 621548841 | 0 |
| 37.12.21.42 | 621548842 | 0 |
| 37.12.21.43 | 621548843 | 0 |
| 37.12.21.44 | 621548844 | 0 |
| 37.12.21.45 | 621548845 | 0 |
| 37.12.21.46 | 621548846 | 0 |
| 37.12.21.47 | 621548847 | 0 |
| 37.12.21.48 | 621548848 | 0 |
| 37.12.21.49 | 621548849 | 0 |
| 37.12.21.50 | 621548850 | 0 |
| 37.12.21.51 | 621548851 | 0 |
| 37.12.21.52 | 621548852 | 0 |
| 37.12.21.53 | 621548853 | 0 |
| 37.12.21.54 | 621548854 | 0 |
| 37.12.21.55 | 621548855 | 0 |
| 37.12.21.56 | 621548856 | 0 |
| 37.12.21.57 | 621548857 | 0 |
| 37.12.21.58 | 621548858 | 0 |
| 37.12.21.59 | 621548859 | 0 |
| 37.12.21.60 | 621548860 | 0 |
| 37.12.21.61 | 621548861 | 0 |
| 37.12.21.62 | 621548862 | 0 |
| 37.12.21.63 | 621548863 | 0 |
| 37.12.21.64 | 621548864 | 0 |
| 37.12.21.65 | 621548865 | 0 |
| 37.12.21.66 | 621548866 | 0 |
| 37.12.21.67 | 621548867 | 0 |
| 37.12.21.68 | 621548868 | 0 |
| 37.12.21.69 | 621548869 | 0 |
| 37.12.21.70 | 621548870 | 0 |
| 37.12.21.71 | 621548871 | 0 |
| 37.12.21.72 | 621548872 | 0 |
| 37.12.21.73 | 621548873 | 0 |
| 37.12.21.74 | 621548874 | 0 |
| 37.12.21.75 | 621548875 | 0 |
| 37.12.21.76 | 621548876 | 0 |
| 37.12.21.77 | 621548877 | 0 |
| 37.12.21.78 | 621548878 | 0 |
| 37.12.21.79 | 621548879 | 0 |
| 37.12.21.80 | 621548880 | 0 |
| 37.12.21.81 | 621548881 | 0 |
| 37.12.21.82 | 621548882 | 0 |
| 37.12.21.83 | 621548883 | 0 |
| 37.12.21.84 | 621548884 | 0 |
| 37.12.21.85 | 621548885 | 0 |