Check-Host.cc

Autonomous System

AS3356 · Lumen AS3356

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Announced IPs
34.66M
IPv4
IPv4 Prefixes
2,038
IPv6 Prefixes
159
Hosted Domains
27,954
resolve into this AS
Peers
83
Customers
6,645

AS Profile

AS Name
Lumen AS3356
Also known as
CenturyLink; Level3;
AS Type
NSP
Scope
Global
Traffic
100+Tbps
RIR
ARIN
Country
US
Allocated
2000-03-10

RPKI Validity

Total ROAs
7,358
Valid Prefixes
237
NotFound
1,960
Announced (BGP)
2,197
RPKI Coverage
10.8%

Geographic Footprint

Countries where this AS's scanned IPs are geolocated, by open-IP count.

US
47,969
NL
3,155
IT
2,618
ES
2,588
DE
2,436
GB
2,298
Anycast
1,826
JP
1,656
CO
856
AU
854
BR
803
GU
748

Top Open Ports

Most common open ports across IPs in this AS (last 30 days).

Port Open IPs
179 6,908
40000 2,826
443 2,808
60000 2,615
80 2,079
22 1,245
2000 921
5060 640
8443 507
8080 399
21 375
53 333
25 311
10000 290
44818 283

Upstreams

Tier-1 / transit-free network

CAIDA AS-Relationships sees no upstream transit provider for this ASN — either a tier-1 carrier, a settlement-free routing arrangement, or an ASN that peers privately. Tier-1s like AS174, AS3356, AS6939 also show empty here.