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
28,203
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
4,878
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
48,455
NL
3,200
IT
2,673
ES
2,622
DE
2,441
GB
2,309
Anycast
1,830
JP
1,683
AU
865
CO
860
BR
810
GU
751

Top Open Ports

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

Port Open IPs
179 7,214
40000 2,952
443 2,939
60000 2,740
80 2,208
22 1,295
2000 968
5060 676
8443 528
8080 405
21 386
53 348
25 328
10000 300
44818 288

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.