BufferLinkPreviewBot

Fully verifiable

The crawler behind link previews in Buffer's social-media management product. When someone shares a link in Buffer it fetches the page's public metadata — title, description, thumbnail and Open Graph or Twitter Card data — so the poster can see how the post will look. Buffer publishes its egress addresses both on that page and as a machine-readable JSON document, and sends X-BufferLinkPreviewBot headers alongside the user agent.

Operated by Buffer · Official documentation

User agents

Patterns this directory matches, with real observed strings.

regexBufferLinkPreviewBot/\d
observedBufferLinkPreviewBot/1.0 (+https://scraper.buffer.com/about/bots/link-preview-bot)

How to verify

Fetch the official IP range feed

curl -s https://scraper.buffer.com/about/bots/link-preview-bot.json

IP ranges (8)

Refreshed daily from the operator's feed. Also available as /data/ips/buffer-link-preview.ips and /data/bots/buffer-link-preview.json.

3.213.140.44/32
3.220.253.227/32
3.224.33.156/32
52.22.148.168/32
52.3.218.210/32
52.87.69.215/32
54.211.190.68/32
54.235.34.237/32

Good Bot Practices scorecard

Identifies honestly
Stable UA token documented (1 pattern)
Verifiable
Fully verifiable
Respects robots.txt
Honors robots.txt (token: BufferLinkPreviewBot)
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.