Les adresses IP débutant par 128.91.98 sont fournies par University of Pennsylvania, elles appartiennent au CIDR (Classless Inter-Domain Routing) 128.91.0.0/16, le bloc IP comprant les adresses de 128.91.0.0 à 128.91.255.255). Le numéro de système autonome (ASN) est 55.
| ASN | 55 |
| IP commençant par | 128.91.0.0 |
| IP se terminant par | 128.91.255.255 |
| Nom ASN | University of Pennsylvania |
| CDIR | 128.91.0.0/16 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 11/12/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | San Jose | 37,3856 | -121,8853 | 2018-12-11 |
| MaxMind | US | États-Unis | - | San Jose | 37,3874 | -121,9024 | 2018-12-11 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 128.91.98.0 | 2153472512 | 0 |
| 128.91.98.1 | 2153472513 | 0 |
| 128.91.98.2 | 2153472514 | 0 |
| 128.91.98.3 | 2153472515 | 0 |
| 128.91.98.4 | 2153472516 | 0 |
| 128.91.98.5 | 2153472517 | 0 |
| 128.91.98.6 | 2153472518 | 0 |
| 128.91.98.7 | 2153472519 | 0 |
| 128.91.98.8 | 2153472520 | 0 |
| 128.91.98.9 | 2153472521 | 0 |
| 128.91.98.10 | 2153472522 | 0 |
| 128.91.98.11 | 2153472523 | 0 |
| 128.91.98.12 | 2153472524 | 0 |
| 128.91.98.13 | 2153472525 | 0 |
| 128.91.98.14 | 2153472526 | 0 |
| 128.91.98.15 | 2153472527 | 0 |
| 128.91.98.16 | 2153472528 | 0 |
| 128.91.98.17 | 2153472529 | 0 |
| 128.91.98.18 | 2153472530 | 0 |
| 128.91.98.19 | 2153472531 | 0 |
| 128.91.98.20 | 2153472532 | 0 |
| 128.91.98.21 | 2153472533 | 0 |
| 128.91.98.22 | 2153472534 | 0 |
| 128.91.98.23 | 2153472535 | 0 |
| 128.91.98.24 | 2153472536 | 0 |
| 128.91.98.25 | 2153472537 | 0 |
| 128.91.98.26 | 2153472538 | 0 |
| 128.91.98.27 | 2153472539 | 0 |
| 128.91.98.28 | 2153472540 | 0 |
| 128.91.98.29 | 2153472541 | 0 |
| 128.91.98.30 | 2153472542 | 0 |
| 128.91.98.31 | 2153472543 | 0 |
| 128.91.98.32 | 2153472544 | 0 |
| 128.91.98.33 | 2153472545 | 0 |
| 128.91.98.34 | 2153472546 | 0 |
| 128.91.98.35 | 2153472547 | 0 |
| 128.91.98.36 | 2153472548 | 0 |
| 128.91.98.37 | 2153472549 | 0 |
| 128.91.98.38 | 2153472550 | 0 |
| 128.91.98.39 | 2153472551 | 0 |
| 128.91.98.40 | 2153472552 | 0 |
| 128.91.98.41 | 2153472553 | 0 |
| 128.91.98.42 | 2153472554 | 0 |
| 128.91.98.43 | 2153472555 | 0 |
| 128.91.98.44 | 2153472556 | 0 |
| 128.91.98.45 | 2153472557 | 0 |
| 128.91.98.46 | 2153472558 | 0 |
| 128.91.98.47 | 2153472559 | 0 |
| 128.91.98.48 | 2153472560 | 0 |
| 128.91.98.49 | 2153472561 | 0 |
| 128.91.98.50 | 2153472562 | 0 |
| 128.91.98.51 | 2153472563 | 0 |
| 128.91.98.52 | 2153472564 | 0 |
| 128.91.98.53 | 2153472565 | 0 |
| 128.91.98.54 | 2153472566 | 0 |
| 128.91.98.55 | 2153472567 | 0 |
| 128.91.98.56 | 2153472568 | 0 |
| 128.91.98.57 | 2153472569 | 0 |
| 128.91.98.58 | 2153472570 | 0 |
| 128.91.98.59 | 2153472571 | 0 |
| 128.91.98.60 | 2153472572 | 0 |
| 128.91.98.61 | 2153472573 | 0 |
| 128.91.98.62 | 2153472574 | 0 |
| 128.91.98.63 | 2153472575 | 0 |
| 128.91.98.64 | 2153472576 | 0 |
| 128.91.98.65 | 2153472577 | 0 |
| 128.91.98.66 | 2153472578 | 0 |
| 128.91.98.67 | 2153472579 | 0 |
| 128.91.98.68 | 2153472580 | 0 |
| 128.91.98.69 | 2153472581 | 0 |
| 128.91.98.70 | 2153472582 | 0 |
| 128.91.98.71 | 2153472583 | 0 |
| 128.91.98.72 | 2153472584 | 0 |
| 128.91.98.73 | 2153472585 | 0 |
| 128.91.98.74 | 2153472586 | 0 |
| 128.91.98.75 | 2153472587 | 0 |
| 128.91.98.76 | 2153472588 | 0 |
| 128.91.98.77 | 2153472589 | 0 |
| 128.91.98.78 | 2153472590 | 0 |
| 128.91.98.79 | 2153472591 | 0 |
| 128.91.98.80 | 2153472592 | 0 |
| 128.91.98.81 | 2153472593 | 0 |
| 128.91.98.82 | 2153472594 | 0 |
| 128.91.98.83 | 2153472595 | 0 |
| 128.91.98.84 | 2153472596 | 0 |
| 128.91.98.85 | 2153472597 | 0 |