AS397635 Synopsys Inc. πŸ‡ΊπŸ‡Έ US

Announcing 16 prefixes, seen at the RIS collectors.

IPv4 prefixes
16
6,912 (27 Γ— /24)
IPv6 prefixes
0
-
Upstreams
4
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS397635
Name
Synopsys Inc.
Organisation
Synopsys Inc.
Country
πŸ‡ΊπŸ‡Έ US
RIR
ARIN
Allocated
2019-06-11

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

0 valid (0.0%) 0 invalid (0.0%) 16 no ROA (100.0%)

Announcement history

One point per day, recorded at each table import

048121609-1809-1909-2009-2109-22
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-09-21 19:51:38Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4608757533567809
2026-09-21 19:50:03Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 4608122146373356397635
2026-09-21 09:22:17Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4608757533567809
2026-09-21 09:15:51Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 4608122146373356397635
2026-09-21 08:52:06Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4608757533567809
2026-09-21 08:14:52Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 138309713356397635
2026-09-21 08:14:03Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 3549335610209
2026-09-21 08:14:01Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 138309711747018397635
2026-09-21 08:13:37Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 612186939335610209
2026-09-21 08:13:37Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 491345335669397018397635
2026-09-21 08:13:37Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 49134533566939335610209
2026-09-21 08:13:36Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 138309711743356397635
2026-09-21 05:56:14Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4608757533567809
2026-09-21 05:50:31Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 4608122146373356397635
2026-09-19 14:40:14Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4608757533567809
2026-09-19 14:26:51Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 4608122146373356397635
2026-09-18 14:03:09Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 32884032772717433567809
2026-09-18 08:15:28Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 6121869393356397635
2026-09-18 08:11:57Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 6121869397018397635
2026-09-18 08:11:57Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 49134533566939335610209
2026-09-18 08:11:57Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 612186939335610209
2026-09-18 08:11:57Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 491345335669397018397635
2026-09-18 07:14:32Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 573814270882207809