AS23351 Synopsys Inc. 🇺🇸 US

Announcing 1 prefixes, seen at the RIS collectors.

IPv4 prefixes

1,024 (4 × /24)

IPv6 prefixes

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

ASes reachable through it

Registry and operator data

AS number: AS23351
Name: Synopsys Inc.
Organisation: Synopsys Inc.
Country: 🇺🇸 US
RIR: ARIN
Allocated: 2002-03-04

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 1 no ROA (100.0%)

Whois

Fetched from whois.arin.net

ASNumber:       23351
ASName:         ANSYSNH
ASHandle:       AS23351
RegDate:        2002-03-04
Updated:        2026-04-14
Ref:            https://rdap.arin.net/registry/autnum/23351

OrgName:        Synopsys Inc.
OrgId:          SYNOPS
Address:        675 Almanor Ave
City:           Sunnyvale
StateProv:      CA
PostalCode:     94085
Country:        US
RegDate:        1991-02-28
Updated:        2025-10-22
Ref:            https://rdap.arin.net/registry/entity/SYNOPS

OrgRoutingHandle: CHAND323-ARIN
OrgRoutingName:   Chandrashekara, Rajashekara
OrgRoutingPhone:  +09742855547
OrgRoutingEmail:  rac@synopsys.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/CHAND323-ARIN

OrgTechHandle: NETWO2400-ARIN
OrgTechName:   NETWORK-TEAM
OrgTechPhone:  +1-650-584-4260
OrgTechEmail:  network-core@synopsys.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO2400-ARIN

OrgAbuseHandle: NETWO2400-ARIN
OrgAbuseName:   NETWORK-TEAM
OrgAbusePhone:  +1-650-584-4260
OrgAbuseEmail:  network-core@synopsys.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO2400-ARIN