Table 2 Number of IP addresses observed per AS
From: Neighborhoods and bands: an analysis of the origins of spam
IP addr. per AS (x) | #AS | #Msgs (x10 6 ) | #IP addr. |
|---|---|---|---|
x = 1 | 1,581 (49.0%) | 108 (2.7%) | 1,581 (0.5%) |
x <10 | 2,705 (83.9%) | 305 (7.7%) | 5,635 (1.7%) |
x <50 | 3,061 (94.9%) | 797 (20.0%) | 13,309 (4.6%) |
x <100 | 3,131 (97.1%) | 1,150 (28.9%) | 18,159 (5.5%) |
x ≥ 100 | 95 (2.9%) | 2,825 (71.1%) | 319,554 (97.4%) |