IPAS

IP prefix and autonomous system archive

AS4538

IPv4 prefixes
5,056
Unique IPv4 addresses
17,170,432
IPv6 prefixes
10
Unique IPv6 /48 equivalents
265

Route freshness

Age since last updateTotalIPv4IPv6Share
< 5 min0000.0%
5-15 min1100.0%
15-60 min4400.1%
1-6 h861855617.0%
6-24 h16816533.3%
1-3 d11811802.3%
3-7 d2,3292,328146.0%
7-30 d1,5851,585031.3%
30-90 d0000.0%
> 90 d0000.0%

IPv4 CIDR distribution

/12
6   0.1%
/13
12   0.2%
/14
16   0.3%
/15
49   1.0%
/16
86   1.7%
/17
53   1.0%
/18
121   2.4%
/19
297   5.9%
/20
1,219   24.1%
/21
660   13.1%
/22
488   9.7%
/23
596   11.8%
/24
1,453   28.7%
Bar length uses logarithmic scale; values and percentages are exact.

IPv6 CIDR distribution

/40
1   10.0%
/48
9   90.0%
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 12:35:44 to 2026-09-17 01:01:15.