$ query “AS2” --type=asn → 1 result(s)
AS2 — UDEL-DCN
University of Delaware
AS2 is an educational access provider operated by University of Delaware, registered in the United States since 1991. The network announces a respectable 79 104 IPv4 addresses, including a /16. Supports IPv6.
- Pioneer — Registered before the year 2000
Basic Information
- Country
- 🇺🇸 United States
- Category
- Education/Research
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- January 10, 1991
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 11 / 10
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 79 104
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇺🇸 US (1 IPs), 🇿🇦 ZA (6 IPs), 🇷🇺 RU (3 IPs), 🇦🇺 AU
- Prefix Changed
- March 05, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 79 104 total (0.00%)
Connectivity Summary
- Upstream Providers
- 10 upstream autonomous systems providing transit
- Peers
- 2 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 1 downstream autonomous systems buying transit
- Degree
- 20 unique BGP neighbors (providers + customers + peers)
- Reach
- 1 — customer cone size measuring network influence
- Degree Rank
- #7 503
- Reach Rank
- #7 990
Upstream Providers (10)
Prefix Lists
IPv4 Prefixes (11 total)
- 128.4.0.0/16 (65 536 addresses)
- 91.143.144.0/20 (4 096 addresses)
- 129.205.64.0/20 (4 096 addresses)
- 102.130.40.0/21 (2 048 addresses)
- 41.78.232.0/22 (1 024 addresses)
- 154.65.12.0/22 (1 024 addresses)
- 45.228.74.0/23 (512 addresses)
- 45.161.25.0/24 (256 addresses)
- 194.190.53.0/24 (256 addresses)
- 194.190.54.0/24 (256 addresses)
IPv6 Prefixes (2 total)
- 2804:3edc::/32
- 2001:67c:1328::/48