Home Prefix Lookup203.72.0.0/16

203.72.0.0/16 - ERX TANET ASN1 Taiwan Academic Network TANet Information Center (AS1659)

IPv4APNICassignedAS1659ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center RPKI Valid

CIDR

203.72.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇹🇼 Taiwan

City

Taipei

RIR

APNIC

Status

assigned

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
203.72.0.0/16	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	Other IRR	2026-10-11

More-Specific Announcements

49 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
203.72.0.0/21	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.0.0/21	AS17712 CCU-TW National Chung Cheng University	Valid	-	2026-10-11
203.72.8.0/22	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.20.0/24	AS17712 CCU-TW National Chung Cheng University	Valid	-	2026-10-11
203.72.21.0/24	AS18177 NCKU-TW National Cheng Kung University	Valid	-	2026-10-11
203.72.29.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.33.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.39.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.42.0/24	AS18177 NCKU-TW National Cheng Kung University	Valid	-	2026-10-11
203.72.48.0/22	AS17711 NDHU-TW National Dong Hwa University	Valid	-	2026-10-11
203.72.56.0/21	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.64.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.67.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.68.0/23	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.70.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.71.0/24	AS9916 NCTU-TW National Yang Ming Chiao Tung University	Valid	-	2026-10-11
203.72.72.0/24	AS9916 NCTU-TW National Yang Ming Chiao Tung University	Valid	-	2026-10-11
203.72.73.0/24	AS17711 NDHU-TW National Dong Hwa University	Valid	-	2026-10-11
203.72.74.0/23	AS17711 NDHU-TW National Dong Hwa University	Valid	-	2026-10-11
203.72.76.0/22	AS17711 NDHU-TW National Dong Hwa University	Valid	-	2026-10-11
203.72.80.0/21	AS17711 NDHU-TW National Dong Hwa University	Valid	-	2026-10-11
203.72.94.0/24	AS17711 NDHU-TW National Dong Hwa University	Valid	-	2026-10-11
203.72.96.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.100.0/22	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.104.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.112.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.124.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.126.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.144.0/21	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.158.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.177.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.178.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.180.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.182.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.185.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.188.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.191.0/24	AS18177 NCKU-TW National Cheng Kung University	Valid	-	2026-10-11
203.72.206.0/23	AS18177 NCKU-TW National Cheng Kung University	Valid	-	2026-10-11
203.72.208.0/24	AS18177 NCKU-TW National Cheng Kung University	Valid	-	2026-10-11
203.72.211.0/24	AS17713 NSYSU-TW Ministry of Education Computer Center	Valid	-	2026-10-11
203.72.219.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.220.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.226.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.235.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11
203.72.240.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.241.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.246.0/24	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.248.0/23	AS1659 ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center	Valid	-	2026-10-11
203.72.253.0/24	AS17716 NTU-TW National Taiwan University	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.72.0.0/16	AS1659	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS1659	Other IRR	MAINT-AS17709	2023-11-13

Origin ASN

AS1659

ERX-TANET-ASN1 Taiwan Academic Network TANet Information Center

Related Prefixes

More prefixes of AS1659

All prefixes of AS1659 →

Geolocation

Country🇹🇼TaiwanTW

RegionTaiwan

CityTaipei

Coordinates25.0330, 121.5650 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the APNIC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/203.72.0.0/16

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/203.72.0.0/16" | jq

External Links

RIPEstat