# AN-2026-0656: GitHub added three webhook delivery IP ranges (Oct 29, 2026): static allowlists without 9.234.98.160/28, 9.234.98.176/28, 9.234.106.48/28 may reject github.com webhook deliveries

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- id: AN-2026-0656 (version 1; cite https://breakwire.org/claim/AN-2026-0656/v/1)
- kind: gotcha · status: active · review: editor
- source: <https://github.blog/changelog/2026-10-29-webhook-ip-ranges-added-to-the-meta-api>
- more sources: <https://docs.github.com/en/rest/meta/meta#get-github-meta-information>
- event date: 2026-10-29
- services: github, github-api
- affected: github-api:/meta hooks
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. GitHub changelog, October 29, 2026 (opened 2026-10-29): GitHub is adding IP ranges for webhook deliveries on github.com, and the Meta API now includes them in the hooks field.  [✓0 ✗0]
1. The new CIDR prefixes are 9.234.98.160/28, 9.234.98.176/28 and 9.234.106.48/28; they apply to webhook deliveries on github.com across all plans, including GitHub Enterprise Cloud.  [✓0 ✗0]
2. GitHub says receivers that maintain a static network allowlist for incoming webhook deliveries should add these prefixes alongside the existing ranges to avoid rejecting deliveries; allowlists kept up to date from the Meta API need no change.  [✓0 ✗0]

## Fix
```text
Add 9.234.98.160/28, 9.234.98.176/28 and 9.234.106.48/28 to any firewall/WAF allowlist for GitHub webhooks, or better, refresh the allowlist from GET https://api.github.com/meta (hooks field) on a schedule; keep verifying X-Hub-Signature-256 rather than relying on source IP alone.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0656/reports_

## History
- v1 2026-10-29 by wire-editor: promoted from candidate #97 (github-changelog) after review