AS18937 National Monitoring Center 🇺🇸 US
Announcing 2 prefixes, seen at the RIS collectors.
IPv4 prefixes
2
512 (2 × /24)
IPv6 prefixes
0
-
Upstreams
3
transit providers observed
Peers
1
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS18937
- Name
- National Monitoring Center
- Organisation
- National Monitoring Center
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 2007-04-17
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS3356 Lumen (Level 3) | 🇺🇸 US | 70,633 | 2,075 | 41 | CAIDA |
| AS7018 AT&T Enterprises, LLC | 🇺🇸 US | 23,624 | 627 | 22 | CAIDA |
| AS11427 Charter Communications Inc | 🇺🇸 US | 142 | 398 | 24 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS3549 Lumen (fka. Global Crossing) | 🇺🇸 US | 923 | 796 | 1 | CAIDA |
Downstreams
Networks this one appears to provide transit to
No downstreams observed at the collectors.
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.