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
27,629
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
6,118
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
47,175
NL
3,085
IT
2,559
ES
2,532
DE
2,432
GB
2,272
Anycast
1,815
JP
1,625
CO
839
AU
837
BR
798
GU
744

Top Open Ports

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

Port Open IPs
179 7,137
40000 2,976
443 2,944
60000 2,797
80 2,202
22 1,312
2000 969
5060 698
8443 536
8080 434
21 379
53 355
25 341
44818 295
10000 290

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.