$ query “AS21660” --type=asn → 1 result(s)
AS21660 · AS21660
Baxalta Incorporated ASN
AS21660 is owned by Baxalta Incorporated ASN and is an enterprise stub network, based in the United States since 2015. The system announces 4 352 IPv4 addresses. The bulk of its IP address space is in the United States, with additional presence in Austria and Singapore. 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 25, 2015
- Last Changed
- May 10, 2026
- Last Seen
- June 05, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 11 / 7
- IPv6 Prefixes (raw / aggregated)
- 0 / 0
- IPv4 Addresses
- 4 352
- Largest IPv4 Prefix
- /22 (1 024 addresses)
- Geolocated Countries
- 🇺🇸 United States (2 304 IPs), 🇦🇹 Austria (2 048 IPs), 🇸🇬 Singapore (1 024 IPs)
- Prefix Changed
- April 16, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 6 upstreams providing transit
- Degree
- 6 unique BGP neighbors
- Reach
- 0 networks in customer cone
Upstream Providers (6)
Prefix Lists
IPv4 Prefixes (11 total)
- 63.84.72.0/22 (1 024 addresses (/22 prefix))
- 63.244.0.0/22 (1 024 addresses (/22 prefix))
- 185.89.148.0/22 (1 024 addresses (/22 prefix))
- 43.229.156.0/23 (512 addresses (/23 prefix))
- 43.229.158.0/24 (256 addresses (/24 prefix))
- 103.48.172.0/24 (256 addresses (/24 prefix))
- 104.254.253.0/24 (256 addresses (/24 prefix))