AS7809 — SYNOPSYS

AS7809 announces 5 IPv4 prefixes covering 2,304 addresses and 0 IPv6 prefixes.

About this network

SYNOPSYS is the corporate network of Synopsys, Inc., the electronic design automation company headquartered in Sunnyvale, California.

What it's used for

• Enterprise IT for Synopsys: corporate sites, engineering offices and the company's public-facing edge services.
• Announces roughly 2,000 addresses out of 149.117.0.0. The visible reverse DNS is entirely Synopsys's own infrastructure — external DNS, SMTP relays and remote-access VPN gateways on synopsys.com.

Notable

• The rDNS names a European datacentre prefix on the VPN and mail hosts, so this AS carries edge services for Synopsys sites beyond the US even though the registrant and the AS are American.
• This is a company's own network. Nothing here is hosting or subscriber space, and addresses should be attributed to Synopsys offices, not to any provider.

Interesting

• Synopsys designs the software chipmakers use to design chips, and it holds an AS number from January 1997 — a reminder of how early Silicon Valley EDA firms needed wide-area routing between engineering sites.

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

Announced prefixes

• 149.117.132.0/22
• 149.117.136.0/23
• 149.117.139.0/24
• 149.117.140.0/24
• 149.117.147.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS8932 Ucom CJSC
• AS702 Verizon Business
• AS43733 Viva Armenia CJSC
• AS8220 COLT Technology Services Group Limited

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS8932 Ucom CJSC
• AS702 Verizon Business
• AS43733 Viva Armenia CJSC
• AS8220 COLT Technology Services Group Limited