AS397635 Synopsys Inc.

PATHLINE-CAMPUS - Synopsys Inc. · registered in the United States

IPv4 addresses4,8649 prefixes · <0.001% of announced IPv4

Rank in United States#4,239largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#14,122of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS397635 in ASN lookup Look up an IP in this network (149.117.4.1) All networks in United States

IPv4 prefixes

All 9 prefixes, in address order.

149.117.4.0/24
149.117.7.0/24
149.117.72.0/21
149.117.87.0/24
149.117.90.0/23
149.117.92.0/23
149.117.96.0/23
149.117.98.0/24
149.117.99.0/24

Other ASNs named Synopsys Inc.

4 other networks use the same organisation name; together with AS397635 they announce 9,216 IPv4 addresses.

ASNNameIPv4 addresses

AS7809SYNOPSYS - Synopsys Inc. US2,304

AS24539SYNOPSYS-INDC-AS - Synopsys Inc. IN1,280

AS26791BADC-CLOUD - Synopsys Inc. US512

AS397868WHITEHAT-US-PROD-2 - Synopsys Inc. US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS395434#4236 46LABS-DAL1 - 46 Labs LLC4,864

AS396151#4237 STEWARDHEALTHCARE - Steward Health Care System LLC4,864

AS396185#4238 PEMTEL - GILES-CRAIG COMMUNICATIONS INC.4,864

AS399313#4240 LOWELL-INT - TUFTS ASSOCIATED HEALTH PLANS, INC.4,864

AS19648#4241 LDSCHURCH1 - Corporation of the Presiding Bishop of the Church of Jesus Christ of Latter-day Saints4,608

AS38047#4242 TAIWAN-TELECOM - Taiwan Telecom4,608

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources