Autonomous system
AS7809 SYNOPSYS
Unclassified ARIN
Summary
Synopsys
enterprise legacy
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 onsynopsys.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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 2.30K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS7809- Registry name
- SYNOPSYS
- Registrant
- Synopsys Inc.
- Abuse contact
- network-core@synopsys.com
- Registered
- 1997-01-17
- Last changed
- 2012-04-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 27% valid · 3 valid, 8 with no ROA
- ROAs
- 3 authorising AS7809
- ASPA
- no ASPA record
- IRR
- 91% registered · 10 of 11 announcements
- Route objects
- 14 naming AS7809
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere