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
27,751
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
47,468
NL
3,115
IT
2,576
ES
2,559
DE
2,433
GB
2,277
Anycast
1,818
JP
1,635
CO
844
AU
843
BR
799
GU
745

Top Open Ports

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

Port Open IPs
179 6,638
40000 2,717
443 2,693
60000 2,517
80 1,971
22 1,188
2000 875
5060 612
8443 483
8080 388
21 349
53 326
25 301
44818 276
10000 269

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.