IPAS

IP prefix and autonomous system archive

AS209

IPv4 prefixes
1,591
Unique IPv4 addresses
19,845,632
IPv6 prefixes
32
Unique IPv6 /48 equivalents
17,039,364

Route freshness

Age since last updateTotalIPv4IPv6Share
< 5 min320322.0%
5-15 min0000.0%
15-60 min272701.7%
1-6 h1,5611,561096.2%
6-24 h1100.1%
1-3 d0000.0%
3-7 d0000.0%
7-30 d2200.1%
30-90 d0000.0%
> 90 d0000.0%

IPv4 CIDR distribution

/11
1   0.1%
/12
7   0.4%
/13
8   0.5%
/14
6   0.4%
/15
17   1.1%
/16
77   4.8%
/17
28   1.8%
/18
44   2.8%
/19
84   5.3%
/20
146   9.2%
/21
178   11.2%
/22
199   12.5%
/23
230   14.5%
/24
566   35.6%
Bar length uses logarithmic scale; values and percentages are exact.

IPv6 CIDR distribution

/24
1   3.1%
/32
4   12.5%
/39
26   81.2%
/46
1   3.1%
Bar length uses logarithmic scale; values and percentages are exact.

Unique space removes overlap between prefixes announced by the same ASN. Update range: 2026-08-19 18:31:34 to 2026-09-17 01:06:57.