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Autonomous System

AS9505

Taiwan Internet Gateway

Announced IPs
22,272
CIDR prefixes
14
ASN
AS9505

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built
  • Baseline (neutral) 65
  • Isp allocation +5
  • Trust score 70 / 100

Experimental · trust-vectors model v1.3.0 — a transparent heuristic, not a definitive verdict. How it works →

About Chunghwa Telecom

Chunghwa Telecom, officially Chunghwa Telecom Co., Ltd., is the largest integrated telecommunications service provider in Taiwan, providing PSTN, mobile phone, and broadband services, operated by PCCW.

Founded
1996
Headquarters
Taipei
Industry
telecommunications industry
Employees
20,008

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 100-200Gbps
Geographic scope Global
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-TWIG

Present at 11 internet exchanges: Equinix Palo Alto, Equinix Hong Kong, Equinix Los Angeles, Any2West, Equinix Chicago, TPIX-TW, Equinix Singapore, LINX LON1: Main, HKIX: HKIX Peering LAN, BKNIX (Thailand): Bangkok, …

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
175.41.48.0/20 4.1K
99.3%
Taiwan Internet Gateway TW — —
175.111.224.0/20 4.1K
100.0%
Taiwan Internet Gateway TW — —
203.78.176.0/20 4.1K
99.9%
Taiwan Internet Gateway TW — —
203.160.224.0/20 4.1K
87.1%
Taiwan Internet Gateway TW — —
175.111.240.0/21 2.0K
100.0%
Taiwan Internet Gateway TW — —
175.111.244.0/22 1.0K
100.0%
Taiwan Internet Gateway TW — —
66.171.112.0/23 512
99.6%
Taiwan Internet Gateway US — —
66.171.116.0/23 512
99.6%
Taiwan Internet Gateway US — —
175.111.242.0/23 512
100.0%
Taiwan Internet Gateway TW — —
203.78.176.0/23 512
100.0%
Taiwan Internet Gateway TW — —
203.78.182.0/23 512
99.8%
Taiwan Internet Gateway TW — —
203.78.190.0/23 512
100.0%
Taiwan Internet Gateway TW — —
203.160.226.0/23 512
99.4%
Taiwan Internet Gateway TW — —
203.160.230.0/23 512
99.6%
Taiwan Internet Gateway TW — —
203.160.234.0/23 512
49.8%
Taiwan Internet Gateway TW — —
203.160.236.0/23 512
99.8%
Taiwan Internet Gateway TW — —
208.70.202.0/23 512
97.9%
Taiwan Internet Gateway US — —
208.70.206.0/23 512
99.0%
Taiwan Internet Gateway US — —
220.128.48.0/23 512
100.0%
Taiwan Internet Gateway TW — —
220.128.52.0/23 512
50.0%
Taiwan Internet Gateway TW — —
66.171.117.0/24 256
100.0%
Taiwan Internet Gateway TW — —
175.41.49.0/24 256
100.0%
Taiwan Internet Gateway TW — —
175.41.50.0/24 256
99.2%
Taiwan Internet Gateway TW — —
175.41.52.0/24 256
98.4%
Taiwan Internet Gateway TW — —
175.41.54.0/24 256
98.8%
Taiwan Internet Gateway TW — —
175.41.56.0/24 256
100.0%
Taiwan Internet Gateway TW — —
175.41.59.0/24 256
99.2%
Taiwan Internet Gateway TW — —
175.41.62.0/24 256
99.6%
Taiwan Internet Gateway TH — —
175.111.241.0/24 256
100.0%
Taiwan Internet Gateway TW — —
203.78.178.0/24 256
100.0%
Taiwan Internet Gateway TW — —
203.78.179.0/24 256
100.0%
Taiwan Internet Gateway US — —
203.78.180.0/24 256
100.0%
Taiwan Internet Gateway TW — —
203.78.184.0/24 256
99.6%
Taiwan Internet Gateway TW — —
203.78.189.0/24 256
100.0%
Taiwan Internet Gateway TW — —
203.160.224.0/24 256
99.2%
Taiwan Internet Gateway US — —
203.160.229.0/24 256
98.8%
Taiwan Internet Gateway TW — —
203.160.232.0/24 256
99.2%
Taiwan Internet Gateway TW — —
203.160.238.0/24 256
99.6%
Taiwan Internet Gateway HK — —
203.160.239.0/24 256
99.6%
Taiwan Internet Gateway TW — —
208.70.200.0/24 256
98.8%
Taiwan Internet Gateway US — —
208.70.203.0/24 256
98.0%
Taiwan Internet Gateway US — —
208.70.207.0/24 256
98.8%
Taiwan Internet Gateway US — —
220.128.50.0/24 256
100.0%
Taiwan Internet Gateway TW — —
220.128.54.0/24 256
100.0%
Taiwan Internet Gateway TW — —
66.171.116.0/25 128
99.2%
Taiwan Internet Gateway TW — —
175.41.48.128/25 128
99.2%
Taiwan Internet Gateway TW — —
175.41.51.128/25 128
99.2%
Taiwan Internet Gateway TW — —
175.41.53.128/25 128
98.4%
Taiwan Internet Gateway TW — —
175.41.55.128/25 128
100.0%
Taiwan Internet Gateway TW — —
175.41.57.128/25 128
99.2%
Taiwan Internet Gateway TW — —
175.111.240.128/25 128
100.0%
Taiwan Internet Gateway TW — —
203.78.185.128/25 128
100.0%
Taiwan Internet Gateway TW — —
203.78.188.0/25 128
100.0%
Taiwan Internet Gateway TW — —
203.160.225.128/25 128
100.0%
Taiwan Internet Gateway TW — —
203.160.228.0/25 128
99.2%
Taiwan Internet Gateway TW — —
203.160.233.128/25 128
0.0%
Taiwan Internet Gateway TW — —
208.70.202.0/25 128
97.7%
Taiwan Internet Gateway US — —
208.70.206.128/25 128
99.2%
Taiwan Internet Gateway US — —
66.171.116.128/26 64
100.0%
Taiwan Internet Gateway TW — —
175.41.48.0/26 64
100.0%
Taiwan Internet Gateway TW — —
175.41.51.0/26 64
100.0%
Taiwan Internet Gateway TW — —
175.41.53.64/26 64
98.4%
Taiwan Internet Gateway TW — —
175.41.55.0/26 64
100.0%
Taiwan Internet Gateway SG — —
175.41.60.128/26 64
100.0%
Taiwan Internet Gateway TW — —
175.41.61.0/26 64
100.0%
Taiwan Internet Gateway HK — —
175.41.61.128/26 64
100.0%
Taiwan Internet Gateway TW — —
175.41.63.192/26 64
100.0%
Taiwan Internet Gateway TW — —
175.111.240.64/26 64
100.0%
Taiwan Internet Gateway TW — —
203.78.186.64/26 64
100.0%
Taiwan Internet Gateway US — —
203.78.186.128/26 64
100.0%
Taiwan Internet Gateway TW — —
203.78.187.64/26 64
100.0%
Taiwan Internet Gateway TW — —
203.78.187.192/26 64
100.0%
Taiwan Internet Gateway TW — —
203.78.188.128/26 64
100.0%
Taiwan Internet Gateway TW — —
203.160.228.192/26 64
100.0%
Taiwan Internet Gateway US — —
203.160.233.0/26 64
0.0%
Taiwan Internet Gateway TW — —
208.70.202.128/26 64
98.4%
Taiwan Internet Gateway US — —
208.70.206.0/26 64
100.0%
Taiwan Internet Gateway US — —
208.70.206.64/26 64
100.0%
Taiwan Internet Gateway SG — —
66.171.116.224/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.48.64/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.51.96/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.53.0/27 32
96.9%
Taiwan Internet Gateway TW — —
175.41.53.32/27 32
96.9%
Taiwan Internet Gateway US — —
175.41.55.64/27 32
100.0%
Taiwan Internet Gateway HK — —
175.41.55.96/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.57.0/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.57.96/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.58.64/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.58.224/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.60.96/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.61.64/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.61.224/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.63.32/27 32
100.0%
Taiwan Internet Gateway TW — —
175.41.63.64/27 32
100.0%
Taiwan Internet Gateway TW — —
175.111.240.32/27 32
100.0%
Taiwan Internet Gateway TW — —
203.78.185.96/27 32
100.0%
Taiwan Internet Gateway TW — —
203.78.186.0/27 32
100.0%
Taiwan Internet Gateway TH — —
203.78.186.32/27 32
100.0%
Taiwan Internet Gateway TW — —
203.78.186.192/27 32
100.0%
Taiwan Internet Gateway TW — —
203.78.187.0/27 32
100.0%
Taiwan Internet Gateway TW — —

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS9505 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
203.160.235.0/24 60,113 2026-11-15 00:29:59
203.78.180.0/24 59,971 2026-11-15 00:29:59
175.41.48.0/20 59,943 2026-11-15 00:29:59
175.41.50.0/24 59,934 2026-11-15 00:29:59
203.78.179.0/24 59,771 2026-11-15 00:27:00
175.111.237.0/24 59,756 2026-11-15 00:27:00
175.111.238.0/24 59,639 2026-11-15 00:27:00
175.111.239.0/24 59,635 2026-11-15 00:27:00
203.78.176.0/20 59,602 2026-11-15 00:27:00
175.41.51.0/24 59,591 2026-11-15 00:29:59
203.160.232.0/24 59,492 2026-11-15 00:27:00
203.78.182.0/24 59,489 2026-11-15 00:27:00
203.160.233.0/24 59,405 2026-11-15 00:27:00
203.160.231.0/24 59,325 2026-11-15 00:27:00
203.160.224.0/20 59,311 2026-11-15 00:27:00
220.128.48.0/21 59,211 2026-11-15 00:27:00
175.41.52.0/24 59,188 2026-11-15 00:27:00
220.128.48.0/24 59,058 2026-11-15 00:27:00
175.41.54.0/24 58,921 2026-11-15 00:27:00
175.111.224.0/20 58,881 2026-11-15 00:27:00
175.41.48.0/24 58,858 2026-11-15 00:27:00
175.41.49.0/24 58,792 2026-11-15 00:27:00
175.41.63.0/24 58,780 2026-11-15 00:27:00
175.111.240.0/21 58,741 2026-11-15 00:27:00
175.41.55.0/24 58,722 2026-11-15 00:27:00
175.111.236.0/24 58,685 2026-11-15 00:27:00
175.41.61.0/24 58,662 2026-11-15 00:27:00
175.41.62.0/24 58,660 2026-11-15 00:27:00
175.41.58.0/24 58,567 2026-11-15 00:27:00
175.41.56.0/24 58,539 2026-11-15 00:27:00
175.41.57.0/24 58,503 2026-11-15 00:27:00
175.111.235.0/24 58,471 2026-11-15 00:27:00
175.111.234.0/24 51,137 2026-11-15 00:27:00
208.70.200.0/21 45,084 2026-11-15 00:07:29
208.70.200.0/24 39,651 2026-11-15 00:07:42
66.171.112.0/21 34,402 2026-11-15 00:07:29
203.78.186.0/24 2,756 2026-08-05 07:44:35
220.128.52.0/24 299 2026-07-21 06:17:10

Frequently Asked Questions

What is AS9505?

AS9505 is an Autonomous System Number assigned to Taiwan Internet Gateway. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS9505 announce?

AS9505 announces 22.3K IPv4 addresses distributed across 14 routed CIDR prefixes. The network is registered in Taiwan.

Who operates AS9505?

AS9505 is operated by Taiwan Internet Gateway. The organization is based in Taiwan. You can view all IP ranges and related ASNs on the organization page.

What country is AS9505 registered in?

AS9505 is registered in Taiwan. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-11-15 00:24:05 UTC
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