AS3356 · 
US — LEVEL3 - Level 3 Parent, LLC
· View prefixes · Compare ASN · Export prefixes
LEVEL3 - Level 3 Parent, LLC · · US
Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 10 Oct 16:00 UTC; routeviews2 10 Oct 20:00 UTC; routeviews6 10 Oct 20:00 UTC. Validator: 10 Oct 20:56 UTC. Publication-point issues: 87
Address space details
Overlapping originated prefixes counted once. IPv4 addresses: 28,861,184
IPv6 addresses: 1505734033291495241904988094464
Loading public source data…
Observed originated prefixes
These are observed BGP origins, not an inventory of registered allocations or transit reachability.
1068 matching prefix–origin pairs. Each pair appears once; source observations are in Details.
| Prefix | RPKI | Last observed | Details |
|---|---|---|---|
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Valid | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Invalid | 10 Oct 20:00 UTC | 1 source observations
Validation evidenceorigin ASN mismatch {
"state": "invalid",
"reason": "origin ASN mismatch",
"observed_at": "2026-10-10T20:56:41.855485+00:00",
"source": "Local Routinator",
"metadata": {
"rows": 1018586,
"serial": 20,
"version": "routinator/0.15.2",
"publication_point_issues": 87
},
"vrps": [
{
"prefix": "8.236.0.0/15",
"asn": 396982,
"max_length": 15,
"trust_anchor": "arin"
}
]
} | |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 20:00 UTC | 2 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
| |
Not Found | 10 Oct 16:00 UTC | 1 source observations
|
Observed AS neighbors
5173 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.
5173 matching neighbors · 1–25 shown
| Network | IPv4/IPv6 | Seen in | Last observed | Details |
|---|---|---|---|---|
AS3 · US Massachusetts Institute of Technology | IPv4 | routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS6 · US BULL-HN - ATOS IT Solutions and Services, Inc. | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS9 · US CMU-ROUTER - Carnegie Mellon University | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS12 · US NYU-DOMAIN - New York University | IPv6 | ris-rrc00, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS19 · US LEIDOS-AS - Leidos, Inc. | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
|
AS20 · US University of Rochester | IPv4 | routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS29 · US Yale University | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS35 · US MITRE-AS-1 - The MITRE Corporation | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS42 · US WOODYNET-1 - WoodyNet, Inc. | IPv4 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
|
AS49 · US National Institute of Standards and Technology | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS60 · US AINET-AS60-PDFFILE - American Information Network | IPv4, IPv6 | routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS62 · US CyrusOne LLC | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS72 · US Schlumberger Limited | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS80 · US GE-CRD - General Electric Company | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS81 · US NCREN - MCNC | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS82 · US OPENTEXT - Attachmate Corp. | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS85 · US AERO-NET - The Aerospace Corporation | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS91 · US Rensselaer Polytechnic Institute | IPv4 | routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS97 · US NTTA-97 - NTT America, Inc. | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS98 · US ROCKEFELLER-AS - The Rockefeller University | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS103 · US Northwestern University | IPv6 | ris-rrc00 | 10 Oct 16:00 UTC | Source observations
|
AS104 · US COLORADO-AS - University of Colorado at Boulder | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS106 · US GDAIS-ASN-106 - General Dynamics Mission Systems, Inc. | IPv4 | ris-rrc00, routeviews2 | 10 Oct 20:00 UTC | Source observations
|
AS109 · US CISCOSYSTEMS - CISCO SYSTEMS, INC. | IPv4, IPv6 | ris-rrc00, routeviews2, routeviews6 | 10 Oct 20:00 UTC | Source observations
|
AS111 · US Boston University | IPv4 | routeviews2 | 10 Oct 20:00 UTC | Source observations
|
View observed neighbor graph (up to 15 AS nodes)
Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.
Showing 14 of 5173 matching neighbors, in table sort order, independent of table page.
Peering & locations
Loading public source data…
Registry information
No cached registry response is available yet. Routing origins above are not a substitute for registry ownership.
Allocation statistics
NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.
- AS3356–AS3356 · arin · assigned · ASN allocation country: US · Allocation date: 2000-03-10 — NRO/RIR data · snapshot 10 Oct 00:00 UTC
Prefix count history
Local observation changes
Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.
- 10 Oct 18:00 UTC · No longer observed in selected snapshots · 192.91.253.0/24
1 source observations
- routeviews2 · imported 10 Oct 18:37 UTC
- 10 Oct 16:00 UTC · No longer observed in selected snapshots · 65.114.255.0/24
1 source observations
- ris-rrc00 · imported 10 Oct 16:34 UTC
Retained local prefix-count observations
Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.
| Source | Snapshot | Family | Prefixes | Peer coverage |
|---|---|---|---|---|
routeviews2 | 10 Oct 20:00 UTC | IPv4 | 908 | 140.192.8.16/IPv4 |
routeviews6 | 10 Oct 20:00 UTC | IPv6 | 127 | 2406:840:feed:2::1/IPv6 |
routeviews2 | 10 Oct 18:00 UTC | IPv4 | 908 | 140.192.8.16/IPv4 |
routeviews6 | 10 Oct 18:00 UTC | IPv6 | 127 | 2406:840:feed:2::1/IPv6 |
ris-rrc00 | 10 Oct 16:00 UTC | IPv4 | 939 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 16:00 UTC | IPv6 | 126 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 08:00 UTC | IPv4 | 940 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |
ris-rrc00 | 10 Oct 08:00 UTC | IPv6 | 126 | 2a00:5884::6/IPv6, 89.234.186.6/IPv4 |