Home Prefix Lookup203.123.128.0/18

203.123.128.0/18 - Telstra Global (AS4637)

IPv4APNICallocatedAS4637ASN-TELSTRA-GLOBAL - Telstra Global RPKI Valid

CIDR

203.123.128.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇮🇳 India

City

Bengaluru (Pattandur Agrahara)

RIR

APNIC

Status

allocated

Allocated

1999-08-31

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
203.123.128.0/18	AS4637 ASN-TELSTRA-GLOBAL - Telstra Global	Valid	APNIC	2026-10-13

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.123.128.0/18	AS4637	/24	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS4637	APNIC	MAINT-HK-TI	2020-02-20

Origin ASN

AS4637

ASN-TELSTRA-GLOBAL - Telstra Global

Related Prefixes

More prefixes of AS4637

All prefixes of AS4637 →

Geolocation

Country🇮🇳IndiaIN

RegionKarnataka

CityBengaluru (Pattandur Agrahara)

Coordinates12.9863, 77.7360 ↗

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/203.123.128.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/203.123.128.0/18" | jq

External Links

RIPEstat