Les adresses IP débutant par 128.2.121 sont fournies par Carnegie Mellon University, elles appartiennent au CIDR (Classless Inter-Domain Routing) 128.2.0.0/16, le bloc IP comprant les adresses de 128.2.0.0 à 128.2.255.255). Le numéro de système autonome (ASN) est 9.
| ASN | 9 |
| IP commençant par | 128.2.0.0 |
| IP se terminant par | 128.2.255.255 |
| Nom ASN | Carnegie Mellon University |
| CDIR | 128.2.0.0/16 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 11/07/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Bloomfield | 40,4609 | -79,9509 | 2017-07-03 |
| MaxMind | US | États-Unis | - | Pittsburgh | 40,4439 | -79,9561 | 2017-07-03 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 128.2.121.0 | 2147645696 | 0 |
| 128.2.121.1 | 2147645697 | 0 |
| 128.2.121.2 | 2147645698 | 0 |
| 128.2.121.3 | 2147645699 | 0 |
| 128.2.121.4 | 2147645700 | 0 |
| 128.2.121.5 | 2147645701 | 0 |
| 128.2.121.6 | 2147645702 | 0 |
| 128.2.121.7 | 2147645703 | 0 |
| 128.2.121.8 | 2147645704 | 0 |
| 128.2.121.9 | 2147645705 | 0 |
| 128.2.121.10 | 2147645706 | 0 |
| 128.2.121.11 | 2147645707 | 0 |
| 128.2.121.12 | 2147645708 | 0 |
| 128.2.121.13 | 2147645709 | 0 |
| 128.2.121.14 | 2147645710 | 0 |
| 128.2.121.15 | 2147645711 | 0 |
| 128.2.121.16 | 2147645712 | 0 |
| 128.2.121.17 | 2147645713 | 0 |
| 128.2.121.18 | 2147645714 | 0 |
| 128.2.121.19 | 2147645715 | 0 |
| 128.2.121.20 | 2147645716 | 0 |
| 128.2.121.21 | 2147645717 | 0 |
| 128.2.121.22 | 2147645718 | 0 |
| 128.2.121.23 | 2147645719 | 0 |
| 128.2.121.24 | 2147645720 | 0 |
| 128.2.121.25 | 2147645721 | 0 |
| 128.2.121.26 | 2147645722 | 0 |
| 128.2.121.27 | 2147645723 | 0 |
| 128.2.121.28 | 2147645724 | 0 |
| 128.2.121.29 | 2147645725 | 0 |
| 128.2.121.30 | 2147645726 | 0 |
| 128.2.121.31 | 2147645727 | 0 |
| 128.2.121.32 | 2147645728 | 0 |
| 128.2.121.33 | 2147645729 | 0 |
| 128.2.121.34 | 2147645730 | 0 |
| 128.2.121.35 | 2147645731 | 0 |
| 128.2.121.36 | 2147645732 | 0 |
| 128.2.121.37 | 2147645733 | 0 |
| 128.2.121.38 | 2147645734 | 0 |
| 128.2.121.39 | 2147645735 | 0 |
| 128.2.121.40 | 2147645736 | 0 |
| 128.2.121.41 | 2147645737 | 0 |
| 128.2.121.42 | 2147645738 | 0 |
| 128.2.121.43 | 2147645739 | 0 |
| 128.2.121.44 | 2147645740 | 0 |
| 128.2.121.45 | 2147645741 | 0 |
| 128.2.121.46 | 2147645742 | 0 |
| 128.2.121.47 | 2147645743 | 0 |
| 128.2.121.48 | 2147645744 | 0 |
| 128.2.121.49 | 2147645745 | 0 |
| 128.2.121.50 | 2147645746 | 0 |
| 128.2.121.51 | 2147645747 | 0 |
| 128.2.121.52 | 2147645748 | 0 |
| 128.2.121.53 | 2147645749 | 0 |
| 128.2.121.54 | 2147645750 | 0 |
| 128.2.121.55 | 2147645751 | 0 |
| 128.2.121.56 | 2147645752 | 0 |
| 128.2.121.57 | 2147645753 | 0 |
| 128.2.121.58 | 2147645754 | 0 |
| 128.2.121.59 | 2147645755 | 0 |
| 128.2.121.60 | 2147645756 | 0 |
| 128.2.121.61 | 2147645757 | 0 |
| 128.2.121.62 | 2147645758 | 0 |
| 128.2.121.63 | 2147645759 | 0 |
| 128.2.121.64 | 2147645760 | 0 |
| 128.2.121.65 | 2147645761 | 0 |
| 128.2.121.66 | 2147645762 | 0 |
| 128.2.121.67 | 2147645763 | 0 |
| 128.2.121.68 | 2147645764 | 0 |
| 128.2.121.69 | 2147645765 | 0 |
| 128.2.121.70 | 2147645766 | 0 |
| 128.2.121.71 | 2147645767 | 0 |
| 128.2.121.72 | 2147645768 | 0 |
| 128.2.121.73 | 2147645769 | 0 |
| 128.2.121.74 | 2147645770 | 0 |
| 128.2.121.75 | 2147645771 | 0 |
| 128.2.121.76 | 2147645772 | 0 |
| 128.2.121.77 | 2147645773 | 0 |
| 128.2.121.78 | 2147645774 | 0 |
| 128.2.121.79 | 2147645775 | 0 |
| 128.2.121.80 | 2147645776 | 0 |
| 128.2.121.81 | 2147645777 | 0 |
| 128.2.121.82 | 2147645778 | 0 |
| 128.2.121.83 | 2147645779 | 0 |
| 128.2.121.84 | 2147645780 | 0 |
| 128.2.121.85 | 2147645781 | 0 |