CERNET2-TSINGHUA6-AS-AP

AS45576 · Tsinghua University Beijing 100084, China · CN · APNIC

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2

Upstream providers

1

Downstream customers

0

v4 addresses

1

v6 /32s

Provider History

Active Possible trial (<90d) Historical

Current Providers

Provider	First Seen	Last Seen	Peers	Confidence
TWD2-NET-AS-AP AS24239	2024-09-01 1y 8mo	2026-05-09	4 peers AS209
CNGI-BJ-IX2-AS-AP AS24348	2024-09-01 1y 8mo	2026-05-09	22 peers AS209 AS1299 AS3257 AS7768 AS8283 AS8582 AS13781 AS16260 AS17350 AS34428 AS37468 AS41073 AS47147 AS49028 AS61573 AS199524 AS209718 AS265721 AS398465

Customers (1)

Customer	Country	First Seen	Last Seen	IPs	Peers	Confidence
TWD2-NET AS209300	CN	2024-09-01 1y 8mo	2026-05-09	—	4 peers AS209

Network Size

IPv4 and IPv6 prefixes originated over time

0

v4 prefixes

0

v4 addresses

4

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

2025-04-10

Lost Transit

TWD2-NET AS209300 → lost provider CERNET2-TSINGHUA6-AS-AP AS45576

Confidence: 85% Duration: 220d

⇄

2025-04-10

Lost Transit

CERNET2-TSINGHUA6-AS-AP AS45576 → lost provider TWD2-NET-AS-AP AS24239

Confidence: 85% Duration: 220d

⇄

2025-04-09

New Transit

TWD2-NET AS209300 → added provider CERNET2-TSINGHUA6-AS-AP AS45576

Confidence: 90%

⇄

2025-04-09

New Transit

CERNET2-TSINGHUA6-AS-AP AS45576 → added provider TWD2-NET-AS-AP AS24239

Confidence: 90%

⇄

2024-09-02

New Transit

CERNET2-TSINGHUA6-AS-AP AS45576 → added provider CNGI-BJ-IX2-AS-AP AS24348

Confidence: 90%

⇄

Renewal Calendar

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

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