Home Prefix Lookup203.133.64.0/18

203.133.64.0/18 - KBT ., 4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan R.O.C (AS9416)

IPv4APNICannouncedAS9416KBT KBT Co., LTD 4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan R.O.C. RPKI Valid

CIDR

203.133.64.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇹🇼 Taiwan

City

Yingge District

RIR

APNIC

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
203.133.64.0/18	AS9416 KBT KBT Co., LTD 4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan R.O.C.	Valid	Other IRR	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
203.133.0.0/17	AS9416 KBT KBT Co., LTD 4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan R.O.C.	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.133.64.0/18	AS9416	/24	apnic
203.133.0.0/17	AS9416	/17	apnic
203.133.0.0/17	AS18042	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS9416	Other IRR	MAINT-HGC-INTL	2026-10-02

More Specific Prefixes

Prefix	AS	Country	Status
203.133.64.0/19		🇹🇼TW	allocated
203.133.96.0/19		🇹🇼TW	allocated

Transfer History

Registry transfers of 203.133.64.0/18, blocks inside it, or blocks containing it.

203.133.96.0/19Transfer · 2026-06-18
Taiwan Network Information Center/HOSHIN
🇹🇼 TW APNIC
→
Taiwan Network Information Center/kbt-net
🇹🇼 TW APNIC
203.133.64.0/19Transfer · 2026-06-18
Taiwan Network Information Center/HOSHIN
🇹🇼 TW APNIC
→
Taiwan Network Information Center/kbt-net
🇹🇼 TW APNIC

Date	Resource	From	To	Type
2026-06-18	203.133.96.0/19	Taiwan Network Information Center/HOSHIN 🇹🇼 TW APNIC	Taiwan Network Information Center/kbt-net 🇹🇼 TW APNIC	Transfer
2026-06-18	203.133.64.0/19	Taiwan Network Information Center/HOSHIN 🇹🇼 TW APNIC	Taiwan Network Information Center/kbt-net 🇹🇼 TW APNIC	Transfer

Origin ASN

AS9416

KBT KBT Co., LTD 4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan R.O.C.

Related Prefixes

Covering prefix

203.133.0.0/17AS9416

More prefixes of AS9416

All prefixes of AS9416 →

Geolocation

Country🇹🇼TaiwanTW

RegionTaipei

CityYingge District

Coordinates24.9622, 121.3310 ↗

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/203.133.64.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/203.133.64.0/18" | jq

External Links

RIPEstat