AS22283 — SIDLEY

AS22283 announces 10 IPv4 prefixes covering 6,144 addresses and 0 IPv6 prefixes.

About this network

The AS handle SIDLEY is held by Sidley Austin LLP, a global law firm.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by netnames such as NETBLK-SIDLEY and SIDLEY-AUSTIN-LLP-198-232-35-0 registered to the firm.
• The inventory consists of 10 IPv4 prefixes totaling 6144 addresses, with 12 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.

Notable

• All registrants in the RDAP data match the announcer, consistently listing Sidley Austin LLP for every prefix.
• The address inventory is finely subdivided into /21, /22, /23, and /24 blocks, reflecting site-by-site segmentation typical of a large corporate estate.

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

Announced prefixes

• 198.232.32.0/23
• 198.232.35.0/24
• 198.232.36.0/23
• 198.232.42.0/24
• 198.232.44.0/23
• 198.232.46.0/24
• 198.232.48.0/21
• 198.232.56.0/23
• 198.232.58.0/24
• 198.232.60.0/22

Upstream networks

• AS7018 AT&T Enterprises, LLC
• AS701 Verizon Business
• AS6461 Zayo Bandwidth
• AS2914 NTT America, Inc.
• AS2686 AT&T Enterprises, LLC
• AS703 Verizon Business
• AS702 Verizon Business
• AS8220 COLT Technology Services Group Limited
• AS3561 CenturyLink Communications, LLC
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS2687 AT&T Enterprises, LLC
• AS4515 PCCW IMS Ltd (PCCW Business Internet Access)

Adjacent networks

• AS7018 AT&T Enterprises, LLC
• AS701 Verizon Business
• AS6461 Zayo Bandwidth
• AS2914 NTT America, Inc.
• AS2686 AT&T Enterprises, LLC
• AS703 Verizon Business
• AS702 Verizon Business
• AS8220 COLT Technology Services Group Limited
• AS3561 CenturyLink Communications, LLC
• AS15830 Equinix (EMEA) Acquisition Enterprises B.V.
• AS2687 AT&T Enterprises, LLC
• AS4515 PCCW IMS Ltd (PCCW Business Internet Access)

Routing security

• RPKI: 0 valid, 0 invalid and 24 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 46% of announcements registered; 14 route objects.
• Listed in as-sets: AS-63529-AS-IMPORT-AS9505, AS-ATTAP, AS-EC-CH, AS-HGC-INTL, AS-HKNET, AS-HKT-AS4515, AS-HKT-NETVIGATOR, AS-IGNEMEA, AS-TELSTRA-INTL-CUSTOMERS-4637, AS-VIPNETNTT, AS1221:AS-CUSTOMERS, AS17645:AS-GLOBAL, AS17645:AS-NTTS-CUST, AS2764:AS-CUSTOMERS-APF:AS10223, AS2914:AS-ASIA, AS3491:AS-CUSTOMERS-AP, AS3491:AS-CUSTOMERS-EU, AS7545:AS-TPGN-CUSTOMERS, AS8220:AS-COLTDE.