Svix Webhooks

Verifiable

Webhook-sending infrastructure used by Svix's customers to deliver events. Not a crawler; Pro/Enterprise plans get a documented, static set of per-region source IPs, and requests include a Svix sender identifier in the User-Agent.

Operated by Svix · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexSvix-Webhooks/[\d.]+
observedSvix-Webhooks/1.68.0

How to verify

Documented static ranges: 44.228.126.217/32, 50.112.21.217/32, 52.24.126.164/32, 54.148.139.208/32, 2600:1f24:64:8000::/56, 54.164.207.221/32, 54.90.7.123/32, 2600:1f28:37:4000::/56, 52.215.16.239/32, 54.216.8.72/32, 63.33.109.123/32, 2a05:d028:17:8000::/56, 13.239.204.236/32, 54.66.246.217/32, 54.252.65.96/32, 2406:da2c:13:4000::/56, 52.60.44.49/32, 3.98.68.230/32, 3.96.105.27/32, 2600:1f21:1c:4000::/56

IP ranges (20)

Refreshed daily from the operator's feed. Also available as /data/ips/svix-webhooks.ips and /data/bots/svix-webhooks.json.

13.239.204.236/32
2406:da2c:13:4000::/56
2600:1f21:1c:4000::/56
2600:1f24:64:8000::/56
2600:1f28:37:4000::/56
2a05:d028:17:8000::/56
3.96.105.27/32
3.98.68.230/32
44.228.126.217/32
50.112.21.217/32
52.215.16.239/32
52.24.126.164/32
52.60.44.49/32
54.148.139.208/32
54.164.207.221/32
54.216.8.72/32
54.252.65.96/32
54.66.246.217/32
54.90.7.123/32
63.33.109.123/32

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Verifiable
Respects robots.txt
Service traffic you configured — robots.txt does not apply
Behaves
Crawl-rate behavior is operator-declared; not machine-verifiable from this dataset
Reachable operator
Operator and documentation published

Measured against the Good Bot Practices.