PeerGlass

Retrieve all IP prefixes currently being announced by an ASN in BGP.

This shows the ASN's complete routing footprint — every IP range it is actively advertising to the global internet via BGP. Uses RIPE Stat's announced-prefixes endpoint.

Useful for:

• Understanding an organization's complete IP footprint

• Detecting unexpected prefix announcements (possible hijacks)

• M&A due diligence on network assets

• Security research and threat intelligence

min_peers_seeing filters out unstable/flapping routes that only a small number of BGP peers can see. Higher = more stable routes only.

Results are cached for 5 minutes.

Args: params (AnnouncedPrefixesInput): - asn (str): ASN to query (e.g. 'AS13335' or '15169') - min_peers_seeing (int): Minimum peer count filter (default: 5)

Returns: str: Complete list of announced prefixes with peer visibility and first/last seen timestamps. JSON schema: { "resource": str, "is_announced": bool, "announced_prefixes": [ {"prefix": str, "peers_seeing": int, "first_seen": str, "last_seen": str} ] }