TWD2-NET-AS-AP

AS24239 · TWD2 Education and Research Network · CN · APNIC

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3

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	AF
TWD2-NET AS209300	2024-09-01 1y 9mo	2026-06-09	162 peers AS209 AS260 AS701 AS1000 AS3257 AS3320 AS5580 AS6453 AS6461 AS6762 AS6830 AS7018 AS7594 AS7768 AS8582 AS12956 AS16276 AS17350 AS19529 AS30844 AS34549 AS37468 AS47147 AS49544 AS52468 AS64112 AS64475 AS199524 AS212271 AS216285 AS263009 AS271253 AS328840 AS398465	v4 v6
AS6939 AS6939	2024-09-01 1y 9mo	2026-06-09	20 peers AS209 AS553 AS1299 AS8455 AS17350 AS33874 AS34428 AS37468 AS47147 AS49028 AS51088 AS61573 AS151704 AS199524 AS209718	v4 v6
TH-AS-AP AS4842	2024-09-01 1y 9mo	2026-06-09	18 peers AS209 AS1299 AS17290 AS17350 AS37468 AS47147 AS49028 AS61573 AS151704 AS199524 AS209718	v4 v6

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	2026-06-09	—	20 peers AS209 AS553 AS1299 AS8455 AS17350 AS33874 AS34428 AS37468 AS47147 AS49028 AS51088 AS61573 AS151704 AS199524 AS209718		v4 v6
CERNET2-TSINGHUA6-AS-AP AS45576	CN	2024-09-01 1y 9mo	2026-06-09	—	4 peers AS209		v4 v6

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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