$ query “AS23291” --type=asn → 1 result(s)
AS23291 — FLAGSTAR-BANK-US
Flagstar Bank
AS23291 is an enterprise stub network operated by Flagstar Bank, established in the United States in 2002. The network announces 1 024 IPv4 addresses. No IPv6 support — it's 2026, just saying.
Basic Information
- Country
- 🇺🇸 United States
- Category
- Business
- Network Role
- Stub Network
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- February 21, 2002
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 4 / 4
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 1 024
- Largest IPv4 Prefix
- /24 (256 addresses)
- Geolocated Countries
- 🇺🇸 US (4 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 1 024 total (0.00%)
Connectivity Summary
- Upstream Providers
- 3 upstream autonomous systems providing transit
- Peers
- 0 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 0 downstream autonomous systems buying transit
- Degree
- 3 unique BGP neighbors (providers + customers + peers)
- Reach
- 0 — customer cone size measuring network influence
- Degree Rank
- #22 283
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (4 total)
- 12.159.49.0/24 (256 addresses)
- 12.162.250.0/24 (256 addresses)
- 63.78.207.0/24 (256 addresses)
- 63.85.49.0/24 (256 addresses)