AS30133 — ISC-F-AS

AS30133 announces 24 IPv4 prefixes covering 9,984 addresses and 20 IPv6 prefixes.

About this network

ISC-F-AS is operated by Internet Systems Consortium, Inc.

What it's used for

• The address space carries infrastructure for the Internet Systems Consortium, evidenced by netnames such as ISC-NET5, ISC-NET6, and ISC-AP.
• The AS announces 9984 IPv4 addresses across 24 prefixes and 24 IPv6 prefixes, with only 1 observed neighbour, indicating a small, self-contained internal network rather than a transit or access provider.

Notable

• Registrants for the majority of prefixes are Internet Systems Consortium, Inc., while some APNIC-allocated blocks list APNIC Hostmaster or Asia Pacific Network Information Center, Pty. Ltd. as registrants.
• The address inventory is finely subdivided into /22, /23, and /24 blocks, consistent with an internal corporate estate segmented by site or function.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 103.11.221.0/24
• 192.158.250.0/23
• 192.228.80.0/22
• 192.228.84.0/23
• 192.228.87.0/24
• 192.228.92.0/24
• 199.6.8.0/22
• 199.6.12.0/23
• 199.6.14.0/24
• 199.253.63.0/24
• 199.253.181.0/24
• 200.93.240.0/22
• 200.93.244.0/23
• 200.93.246.0/24
• 202.41.140.0/24
• 202.41.142.0/23
• 202.41.144.0/24
• 202.41.146.0/24
• 203.119.16.0/23
• 203.119.19.0/24
• 203.119.20.0/24
• 203.119.51.0/24
• 203.119.57.0/24
• 203.119.79.0/24
• 2001:500:61::/48
• 2001:500:62::/47
• 2001:500:64::/46
• 2001:500:68::/46
• 2001:500:6c::/46
• 2001:500:70::/48
• 2001:500:72::/47
• 2001:500:74::/46
• 2001:500:78::/46
• 2001:500:99::/48
• 2001:500:9a::/47
• 2001:dd8:13::/48
• 2001:dd8:14::/47
• 2001:dd8:17::/48
• 2001:dd8:18::/46
• 2001:dd8:1c::/46
• 2001:dd8:22::/48
• 2001:13c7:7005::/48
• 2001:13c7:7006::/47
• 2001:13c7:7008::/47

Upstream networks

• AS1280 Internet Systems Consortium, Inc.

Adjacent networks

• AS1280 Internet Systems Consortium, Inc.