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
28,023
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
9,838
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
48,112
NL
3,169
IT
2,636
ES
2,597
DE
2,436
GB
2,302
Anycast
1,828
JP
1,669
AU
860
CO
858
BR
803
GU
749

Top Open Ports

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

Port Open IPs
179 6,992
40000 2,865
443 2,850
60000 2,663
80 2,120
22 1,261
2000 934
5060 650
8443 513
8080 399
21 378
53 336
25 315
10000 293
44818 284

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.