AS3356Lumen (Level 3)
United StatesRegistryARINTypeT1As of 10th November 2026, AS3356 (Lumen (Level 3)), a tier-1 transit network registered in the United States with ARIN, originates 2,620 IPv4 prefixes covering 34.6M addresses and 137 IPv6 prefixes. By IPv4 address space that makes it the 18th-largest of the 80,723 networks we see originating IPv4, and the 11th-largest of 18,750 in the United States. It is seen behind 120 upstream networks, most often AS2914 (NTT America, Inc.) and AS3549 (Lumen (fka. Global Crossing)), and in front of 6,609 downstream networks. 7% of its announcements have a valid RPKI ROA; 4 are RPKI-invalid. 38% of its routes reach at least 90% of full-feed peers, and 729 prefixes are also originated by another network.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS3356 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS3356 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
13,415
adjacent networks
- Upstreams
- 1201%
- Peers
- 6,68650%
- Downstreams
- 6,60949%
Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 120.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS2914NTT America, Inc. | US | Peer | 1,302,812 | 68 |
| AS3549Lumen (fka. Global Crossing) | US | Peer | 1,072,419 | 3 |
| AS266213PLANETCLICK TELECOMUNICACOES LTDA |  BR | Peer | 852,697 | 1 |
| AS35280F5 Networks SARL |  FR | Peer | 836,454 | 6 |
| AS1299Arelion (fka. Telia Carrier) |  SE | Peer | 634,652 | 70 |
| AS2152CENIC - CalREN | US | Peer | 552,719 | 1 |
| AS1000LINK AMERICAN | US | Peer | 547,794 | 2 |
| AS9002RETN Limited |  GB | Peer | 476,675 | 39 |
| AS2497Internet Initiative Japan Inc. |  JP | Peer | 476,131 | 6 |
| AS3491PCCW Global (HK) Ltd. |  HK | Peer | 457,837 | 34 |
Prefixes
All 2,757The largest blocks AS3356 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| ::/0 | 18446744T × /64 | 1/63 |
| 4.0.0.0/9 | 8.4M | 75/76 |
| 8.0.0.0/9 | 8.4M | 75/76 |
| 8.0.0.0/12 | 1M | 75/76 |
| 8.16.0.0/12 | 1M | 75/76 |
| 8.32.0.0/12 | 1M | 75/76 |
| 8.48.0.0/12 | 1M | 75/76 |
| 8.64.0.0/12 | 1M | 75/76 |
| 8.192.0.0/12 | 1M | 75/76 |
| 8.240.0.0/12 | 1M | 75/76 |
Routing health
How AS3356's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.
RPKI origin validation
- Valid6.9%190
- Invalid0.1%4
- No ROA93.0%2,563
Propagation
- Globally propagated90% of full-feed peers or more37.7%1,039
- Partially propagated40% to 90%0.1%4
- Seen by few peersUnder 40%62.2%1,714
Prefix sizes
IPv4 — 2,620 prefixes
- /98.4M addresses<0.1%2
- /121M addresses0.3%7
- /13524k addresses0.2%4
- /14262k addresses0.7%18
- /15131k addresses0.3%7
- /1665.5k addresses0.8%22
- /1732.8k addresses0.3%9
- /1816.4k addresses0.9%23
- /198.2k addresses1.0%27
- /204.1k addresses0.8%20
- /212k addresses0.9%23
- /221k addresses1.4%36
- /23512 addresses3.3%87
- /24256 addresses29.0%761
- /25128 addresses4.5%117
- /2664 addresses9.5%248
- /2732 addresses21.9%574
- /2816 addresses1.9%51
- /298 addresses22.3%584
IPv6 — 137 prefixes
- /2934.4B × /640.7%1
- /318.6B × /640.7%1
- /324.3B × /646.6%9
- /332.1B × /641.5%2
- /4016.8M × /640.7%1
- /441M × /641.5%2
- /4865.5k × /6488.3%121
Recent changes
Announcements that started or stopped since 11th Oct 2026.
- Withdrawn113.29.46.192/2710th Nov 2026
- Withdrawn66.162.238.0/269th Nov 2026
- Withdrawn173.226.180.128/279th Nov 2026
- Withdrawn66.193.117.128/258th Nov 2026
- Withdrawn206.190.89.160/278th Nov 2026
- Withdrawn64.129.21.64/277th Nov 2026
- Withdrawn174.46.7.128/277th Nov 2026
- Announced4.19.160.176/286th Nov 2026
- Withdrawn4.19.160.176/286th Nov 2026
- Withdrawn4.39.23.176/296th Nov 2026
- Announced50.59.0.64/266th Nov 2026
- Announced74.203.100.128/265th Nov 2026
754 announced and 745 withdrawn in all; the most recent are shown.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.