$ query “AS21947” --type=asn → 1 result(s)
AS21947 — BCI
Blackfoot Telephone Cooperative Inc.
AS21947 is a mid-size transit provider run by Blackfoot Telephone Cooperative Inc., registered in the United States since 2001. The network announces a respectable 71 424 IPv4 addresses. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇺🇸 United States
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- July 17, 2001
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 14 / 14
- IPv6 Prefixes (raw / aggregated)
- 3 / 3
- IPv4 Addresses
- 71 424
- Largest IPv4 Prefix
- /18 (16 384 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇺🇸 US (16 IPs), 🇦🇺 AU (1 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs out of 71 424 total (0.00%)
Connectivity Summary
- Upstream Providers
- 3 upstream autonomous systems providing transit
- Peers
- 17 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 15 downstream autonomous systems buying transit
- Degree
- 35 unique BGP neighbors (providers + customers + peers)
- Reach
- 17 — customer cone size measuring network influence
- Degree Rank
- #4 047
- Reach Rank
- #2 455
Upstream Providers (3)
Prefix Lists
IPv4 Prefixes (14 total)
- 69.51.64.0/18 (16 384 addresses)
- 66.109.128.0/19 (8 192 addresses)
- 209.137.224.0/19 (8 192 addresses)
- 209.200.192.0/19 (8 192 addresses)
- 216.14.224.0/19 (8 192 addresses)
- 64.25.128.0/20 (4 096 addresses)
- 69.165.112.0/20 (4 096 addresses)
- 192.225.176.0/20 (4 096 addresses)
- 216.47.48.0/20 (4 096 addresses)
- 192.150.152.0/21 (2 048 addresses)
- 199.195.120.0/21 (2 048 addresses)
- 204.11.244.0/22 (1 024 addresses)
- 205.167.162.0/23 (512 addresses)
- 198.60.195.0/24 (256 addresses)
IPv6 Prefixes (3 total)
- 2001:1940::/32
- 2604:300::/32
- 2607:f8e0::/32