bgp.he.net scraper:
- Fixed prefix regex: "Prefixes Originated (v4): 147" format
- Fixed peer regex: "BGP Peers Observed (all): 274" format
- Added prefixes_all field
- AS6830: v4=147, v6=9, peers=274 (was all unavailable)
- Prefix cross-check now works: RIPE 151 vs HE 156 = 97% agreement
Peering Recommendations:
- Now filters out already-established peering sessions
- 3 categories: New Opportunities, Already Peering, No Shared IXP
- Uses BGP neighbour data to detect existing sessions
- Shows "Already peering with all top networks" when applicable
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