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AS18540 · US · ARIN
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3
Upstream providers
1
Downstream customers
7.2k
v4 addresses
1
v6 /32s

Provider History

Active Possible trial (<90d) Historical

Current Providers

Addr family: All IPv4 IPv6
Provider First Seen Last Seen Peers Confidence AF
GTT-BACKBONE
AS3257
 2024-09-01
1y 9mo
 2026-06-05
257 peers
AS260 AS1031 AS1299 AS1351 AS3257 AS3320 AS3491 AS4128 AS4641 AS4775 AS5580 AS6424 AS6730 AS6762 AS6830 AS8220 AS8582 AS12956 AS16276 AS16552 AS19151 AS19754 AS20080 AS24516 AS31742 AS34927 AS35710 AS36924 AS37697 AS38001 AS38726 AS39122 AS48112 AS48919 AS49434 AS49605 AS52468 AS61138 AS61568 AS132337 AS132825 AS133210 AS134823 AS136557 AS138685 AS150369 AS151326 AS151704 AS197580 AS199524 AS199938 AS216285 AS328964 AS398465
v4 v6
AS3356
AS3356
 2024-09-01
1y 9mo
 2026-06-05
131 peers
AS174 AS209 AS917 AS999 AS1299 AS2914 AS3130 AS3320 AS3549 AS4641 AS6082 AS6762 AS7018 AS8220 AS12637 AS12956 AS12969 AS14315 AS14630 AS14907 AS15692 AS16276 AS19151 AS20205 AS20514 AS20612 AS20811 AS25152 AS31510 AS34800 AS34927 AS35008 AS40387 AS43733 AS45049 AS47692 AS49028 AS49544 AS51185 AS52468 AS55222 AS56457 AS56987 AS57630 AS60602 AS61832 AS64112 AS140627 AS142289 AS199524 AS202365 AS205206 AS209650 AS212271 AS262427 AS264409 AS265721 AS272403 AS327960 AS328840 AS398465 AS401332
v4 v6
AS6461
AS6461
 2024-09-01
1y 9mo
 2026-06-05
97 peers
AS1031 AS1299 AS2914 AS3320 AS3491 AS6453 AS6830 AS8888 AS12956 AS14907 AS15562 AS16276 AS17660 AS19151 AS25160 AS35426 AS48362 AS49432 AS51185 AS60539 AS63956 AS132884 AS199524 AS210937 AS271253
v4 v6

Customers (1)

Addr family: All IPv4 IPv6
Customer Country First Seen Last Seen IPs Peers Confidence AF
AS19043
AS19043
 US 2024-09-01
1y 9mo
 2026-06-05 512
171 peers
AS174 AS209 AS260 AS917 AS999 AS1031 AS1299 AS1351 AS2914 AS3130 AS3257 AS3320 AS3491 AS3549 AS4128 AS4641 AS4775 AS5580 AS6082 AS6424 AS6453 AS6730 AS6762 AS6830 AS7018 AS8220 AS8582 AS8888 AS12637 AS12956 AS12969 AS14315 AS14630 AS14907 AS15562 AS15692 AS16276 AS16552 AS17660 AS19151 AS19754 AS20080 AS20205 AS20514 AS20612 AS20811 AS24516 AS25152 AS25160 AS31510 AS31742 AS34800 AS34927 AS35008 AS35426 AS35710 AS36924 AS37697 AS38001 AS38726 AS39122 AS40387 AS43733 AS45049 AS47692 AS48112 AS48362 AS48919 AS49028 AS49432 AS49434 AS49544 AS49605 AS51185 AS52468 AS55222 AS56457 AS56987 AS57630 AS60539 AS60602 AS61138 AS61568 AS61832 AS63956 AS64112 AS132337 AS132825 AS132884 AS133210 AS134823 AS136557 AS138685 AS140627 AS142289 AS150369 AS151326 AS151704 AS197580 AS199524 AS199938 AS202365 AS205206 AS209650 AS210937 AS212271 AS216285 AS262427 AS264409 AS265721 AS271253 AS272403 AS327960 AS328840 AS328964 AS398465 AS401332
v4 v6

Network Size

IPv4 and IPv6 prefixes originated over time

8
v4 prefixes
7.2k
v4 addresses
1
v6 prefixes
1
v6 /32s

Peering Links Over Time

Count of unclassified adjacencies per snapshot date

Event Log

All New Transit Lost Transit Possible Trial Renewal Approaching
2026-04-02
Lost Transit
UNIV-LOUISVILLE AS1657 → lost provider AS18540 AS18540
Confidence: 85% Duration: 577d
⇄
2026-03-09
Lost Transit
UNIV-LOUISVILLE AS1657 → lost provider AS18540 AS18540
Confidence: 85% Duration: 553d
⇄
2025-10-01
Possible Trial
AS16878 AS16878 → possible trial with AS18540 AS18540
Confidence: 60% Duration: 9d
⇄
2025-09-25
Lost Transit
AS16878 AS16878 → lost provider AS18540 AS18540
Confidence: 85% Duration: 42d
⇄
2025-08-14
New Transit
AS16878 AS16878 → added provider AS18540 AS18540
Confidence: 90%
⇄
2024-10-17
Possible Trial
AS20003 AS20003 → possible trial with AS18540 AS18540
Confidence: 60% Duration: 6d
⇄
2024-10-11
Lost Transit
AS20003 AS20003 → lost provider AS18540 AS18540
Confidence: 85% Duration: 39d
⇄
2024-09-02
New Transit
AS20003 AS20003 → added provider AS18540 AS18540
Confidence: 90%
⇄
2024-09-02
New Transit
AS19043 AS19043 → added provider AS18540 AS18540
Confidence: 90%
⇄
2024-09-02
New Transit
AS18540 AS18540 → added provider AS6461 AS6461
Confidence: 90%
⇄
2024-09-02
New Transit
AS18540 AS18540 → added provider AS3356 AS3356
Confidence: 90%
⇄
2024-09-02
New Transit
AS18540 AS18540 → added provider GTT-BACKBONE AS3257
Confidence: 90%
⇄
2024-09-02
New Transit
UNIV-LOUISVILLE AS1657 → added provider AS18540 AS18540
Confidence: 90%
⇄

Renewal Calendar

Active providers first seen 11–13 months ago — possible annual contract renewals

This data is available to subscribers.

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