$ query “AS3356” --type=asn → 1 result(s)
AS3356 — LEVEL3
Level 3 Parent LLC
AS3356 is a Tier-1 transit provider registered to Level 3 Parent LLC, established in the United States in 2000. The network announces a whopping 29.5 million IPv4 addresses (0.80% of routable IPv4 space), including a /9. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- Space Overlord — Over 10 million IPv4 addresses
- #1 by Reach — Top 100 by customer cone size
- #4 by Degree — Top 100 by unique BGP neighbor count
- #1 in United States — Top 10 by reach within country
Basic Information
- Country
- 🇺🇸 United States
- Category
- Internet Service Provider
- Network Role
- Tier-1 Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- March 10, 2000
- Last Changed
- March 04, 2026
- Last Seen
- March 04, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 1 198 / 815
- IPv6 Prefixes (raw / aggregated)
- 140 / 48
- IPv4 Addresses
- 29 473 792
- Largest IPv4 Prefix
- /9 (8 388 608 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇺🇸 US (1 216 IPs), 🇬🇧 GB (47 IPs), 🇵🇪 PE (2 IPs), 🇩🇪 DE, 🇳🇱 NL, 🇫🇷 FR, 🇮🇹 IT, 🇵🇱 PL, 🇧🇷 BR, 🇱🇹 LT, 🇧🇪 BE, 🇦🇷 AR, 🇦🇺 AU, 🇨🇴 CO and 48 more
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 202 flagged IPs out of 29 473 792 total (0.00%)
- Open Proxies
- 3 known open proxies in this network
Connectivity Summary
- Upstream Providers
- 0 upstream autonomous systems providing transit
- Peers
- 72 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 6 511 downstream autonomous systems buying transit
- Degree
- 6 717 unique BGP neighbors (providers + customers + peers)
- Reach
- 71 709 — customer cone size measuring network influence
- Degree Rank
- #4
- Reach Rank
- #1
- Country Rank
- #1
Prefix Lists
IPv4 Prefixes (1 198 total)
- 4.0.0.0/9 (8 388 608 addresses)
- 8.0.0.0/9 (8 388 608 addresses)
- 8.224.0.0/11 (2 097 152 addresses)
- 8.192.0.0/12 (1 048 576 addresses)
- 63.208.0.0/13 (524 288 addresses)
- 64.152.0.0/13 (524 288 addresses)
- 67.24.0.0/13 (524 288 addresses)
- 204.160.0.0/13 (524 288 addresses)
- 64.192.0.0/14 (262 144 addresses)
- 65.56.0.0/14 (262 144 addresses)
- 65.88.0.0/14 (262 144 addresses)
- 67.72.0.0/14 (262 144 addresses)
- 67.96.0.0/14 (262 144 addresses)
- 198.76.0.0/14 (262 144 addresses)
- 198.92.0.0/14 (262 144 addresses)
- 198.112.0.0/14 (262 144 addresses)
- 199.92.0.0/14 (262 144 addresses)
- 205.128.0.0/14 (262 144 addresses)
- 205.180.0.0/14 (262 144 addresses)
- 205.224.0.0/14 (262 144 addresses)
- 206.32.0.0/14 (262 144 addresses)
- 206.240.0.0/14 (262 144 addresses)
- 207.120.0.0/14 (262 144 addresses)
- 209.244.0.0/14 (262 144 addresses)
- 216.140.0.0/14 (262 144 addresses)
- 69.44.0.0/15 (131 072 addresses)
- 72.236.0.0/15 (131 072 addresses)
- 199.76.0.0/15 (131 072 addresses)
- 204.198.0.0/15 (131 072 addresses)
- 62.67.0.0/16 (65 536 addresses)
- 64.200.0.0/16 (65 536 addresses)
- 65.77.0.0/16 (65 536 addresses)
- 131.119.0.0/16 (65 536 addresses)
- 156.139.0.0/16 (65 536 addresses)
- 166.90.0.0/16 (65 536 addresses)
- 171.75.0.0/16 (65 536 addresses)
- 192.216.0.0/16 (65 536 addresses)
- 192.221.0.0/16 (65 536 addresses)
- 192.233.0.0/16 (65 536 addresses)
- 192.239.0.0/16 (65 536 addresses)
- 198.31.0.0/16 (65 536 addresses)
- 199.75.0.0/16 (65 536 addresses)
- 199.78.0.0/16 (65 536 addresses)
- 207.83.0.0/16 (65 536 addresses)
- 207.227.0.0/16 (65 536 addresses)
- 209.0.0.0/16 (65 536 addresses)
- 209.84.0.0/16 (65 536 addresses)
- 209.241.0.0/16 (65 536 addresses)
- 216.202.0.0/16 (65 536 addresses)
- 217.163.0.0/16 (65 536 addresses)
IPv6 Prefixes (140 total)
- 2a10:2780::/29
- 2001:13b2::/31
- 2001:13b4::/32
- 2001:1900::/32
- 2001:4c08::/32
- 2401:f6e0::/32
- 2606:840::/32
- 2806:281::/32
- 2a05:8943::/32
- 2a05:8944::/32
- 2c0f:f7f8::/32
- 2620:11b:e000::/40
- 2602:2f4::/44
- 2620:12c:3000::/44
- 2620:13d:2060::/46
- 2a07:aa00:8::/46
- 2a07:aa00:8c::/46
- 2a07:aa00:90::/46
- 2620:130:800a::/47
- 2a07:aa00:e::/47
- 2a07:aa00:86::/47
- 2a07:aa00:8a::/47
- 2a07:aa00:94::/47
- 2001:428:3816::/48
- 2001:428:5805::/48
- 2001:428:6400::/48
- 2001:450:2015::/48
- 2001:13b0:8029::/48
- 2001:13b0:a031::/48
- 2001:13b0:b900::/48
- 2001:1b40:3333::/48
- 2605:9ac0:fffe::/48
- 2606:640::/48
- 2620:7e:30e0::/48
- 2620:9f:12::/48
- 2620:a9:4000::/48
- 2620:b0:4000::/48
- 2620:cc:4000::/48
- 2620:123:d001::/48
- 2620:135:7002::/48
- 2620:13d:d01c::/48
- 2a06:6540:2002::/48
- 2a06:6541:2002::/48
- 2a07:aa00:4::/48
- 2a07:aa00:d::/48
- 2a07:aa00:80::/48
- 2a07:aa00:84::/48
- 2a07:aa00:96::/48