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
27,601
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
47,103
NL
3,082
IT
2,558
ES
2,531
DE
2,432
GB
2,271
Anycast
1,814
JP
1,624
CO
838
AU
836
BR
798
GU
744

Top Open Ports

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

Port Open IPs
179 7,084
40000 2,970
443 2,934
60000 2,789
80 2,194
22 1,305
2000 967
5060 696
8443 531
8080 432
21 378
53 351
25 340
44818 294
10000 289

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.