TWD2-NET-AS-AP

AS24239 · TWD2 Education and Research Network · CN · APNIC

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2

Upstream providers

2

Downstream customers

0

v4 addresses

<0.1

v6 /32s

Provider History

Active Possible trial (<90d) Historical

Current Providers

Addr family: All IPv4 IPv6

Provider	First Seen	Last Seen	Peers	Confidence	AF
AS6939 AS6939	2024-09-01 1y 9mo	2026-06-13	20 peers AS209 AS553 AS1299 AS17290 AS17350 AS33874 AS34428 AS35426 AS37468 AS41073 AS47147 AS49028 AS61573 AS151704 AS199524 AS209650 AS209718		?af
TH-AS-AP AS4842	2024-09-01 1y 9mo	2026-06-13	18 peers AS209718		?af

Customers (2)

Addr family: All IPv4 IPv6

Customer	Country	First Seen	Last Seen	IPs	Peers	Confidence	AF
FITI-AS-AP AS38255	CN	2024-09-01 1y 9mo	2026-06-13	—	20 peers AS209 AS553 AS1299 AS17290 AS17350 AS33874 AS34428 AS35426 AS37468 AS41073 AS47147 AS49028 AS61573 AS151704 AS199524 AS209650 AS209718		?af
CERNET2-TSINGHUA6-AS-AP AS45576	CN	2024-09-01 1y 9mo	2026-06-13	—	4 peers AS209		?af

Network Size

IPv4 and IPv6 prefixes originated over time

0

v4 prefixes

0

v4 addresses

12

v6 prefixes

<0.1

v6 /32s

Peering Links Over Time

Count of unclassified adjacencies per snapshot date

Event Log

All New Transit Lost Transit Possible Trial Renewal Approaching

2025-07-08

Lost Transit

FITI-AS-AP AS38255 → lost provider TWD2-NET-AS-AP AS24239

Confidence: 85% Duration: 309d

⇄

2025-07-08

Lost Transit

TWD2-NET-AS-AP AS24239 → lost provider AS6939 AS6939

Confidence: 85% Duration: 309d

⇄

2025-04-17

Lost Transit

TWD2-NET-AS-AP AS24239 → lost provider TH-AS-AP AS4842

Confidence: 85% Duration: 227d

⇄

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

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

Confidence: 90%

⇄

2024-09-02

New Transit

FITI-AS-AP AS38255 → added provider TWD2-NET-AS-AP AS24239

Confidence: 90%

⇄

2024-09-02

New Transit

TWD2-NET-AS-AP AS24239 → added provider TWD2-NET AS209300

Confidence: 90%

⇄

2024-09-02

New Transit

TWD2-NET-AS-AP AS24239 → added provider AS6939 AS6939

Confidence: 90%

⇄

2024-09-02

New Transit

TWD2-NET-AS-AP AS24239 → added provider TH-AS-AP AS4842

Confidence: 90%

⇄

Renewal Calendar

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

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