AS397635 Synopsys Inc. πŸ‡ΊπŸ‡Έ US

Announcing 18 prefixes, seen at the RIS collectors.

IPv4 prefixes
18
7,680 (30 Γ— /24)
IPv6 prefixes
0
-
Upstreams
5
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%) 18 no ROA (100.0%)

Announcement history

One point per day, recorded at each table import

059141809-1809-2610-0410-1210-2010-2811-0511-06
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-11-06 06:55:20Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 3772133567809
2026-11-06 06:55:06Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 377213356397635
2026-11-06 06:47:04Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 3772133567809
2026-11-06 06:46:49Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 377213356397635
2026-11-06 06:33:24Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 3772133567809
2026-11-06 06:33:10Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 377213356397635
2026-11-05 23:23:47Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 3772133567809
2026-11-05 23:17:36Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 377213356397635
2026-11-05 19:32:15Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 5782112586325733567809
2026-11-05 09:37:29Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 35493356397635
2026-11-05 09:37:00Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 3549335610209
2026-11-05 09:36:52Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 7018397635
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 202056939335610209
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 70183356397635
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 7018335610209
2026-11-05 09:36:38Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 49134533566939335610209
2026-11-05 09:36:37Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 6121869397018397635
2026-11-05 09:36:37Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 612186939335610209
2026-11-05 09:36:37Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 491345335669397018397635
2026-11-05 05:06:27Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 226521743356397635
2026-11-05 05:06:08Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 3549335610209
2026-11-05 05:06:02Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 491345335669393356397635
2026-11-04 04:37:15Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 20514129982207809
2026-11-04 04:37:11Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 14035773356397635
2026-11-04 04:37:00Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 443935805769393356397635
2026-11-04 04:37:00Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 21628582806762335610209
2026-11-04 04:36:56Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 377213356397635
2026-11-04 04:36:55Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 20649934549291433567809
2026-11-04 04:36:46Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 5738142708129982207809
2026-11-04 04:36:42Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 580571836335610209
2026-11-04 04:36:41Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 14035773356397635
2026-11-04 04:36:39Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 85232573356397635
2026-11-04 04:36:38Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 149073356397635
2026-11-04 04:36:38Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 48185335610209
2026-11-04 04:13:36Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 3800182207809
2026-11-04 04:13:34Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4818533567809
2026-11-04 04:13:34Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 14035773356397635
2026-11-04 04:13:28Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 14035773356397635
2026-11-04 04:13:12Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 37989563001321324657335610209
2026-11-04 04:13:10Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 377213356397635
2026-11-04 04:13:01Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 2950439392129933567809
2026-11-04 04:13:00Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 14035773356397635
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 85232573356397635
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS397635 β†’ AS10209 17639335610209
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 149073356397635
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 1490782207809
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 149073356397635
2026-11-04 04:12:58Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 4943248362176433567809
2026-11-01 04:59:16Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 379895630013213282207809
2026-11-01 04:59:16Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 379895630013213282207809
2026-11-01 02:50:04Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 491345335669393356397635
2026-11-01 02:50:04Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 491345335669393356397635
2026-10-30 12:32:34Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 3492756655693933567809
2026-10-29 06:34:05Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 140357782207809
2026-10-29 06:31:04Z origin change 149.117.1.0/24 AS7809 β†’ AS397635 70183356397635
2026-10-29 05:51:22Z new prefix 149.117.90.0/24 AS397635 Synopsys Inc. 4943248362129964614688746887397635
2026-10-28 18:11:58Z origin change 149.117.1.0/24 AS397635 β†’ AS7809 32884032772717433567809
2026-10-28 14:12:43Z origin change 149.117.1.0/24 AS10209 β†’ AS397635 4608122146373356397635
2026-10-28 06:09:22Z new prefix 149.117.90.0/23 AS397635 Synopsys Inc. 349275665512996461468874688746887397635