Home Prefix Lookup203.121.128.0/20

203.121.128.0/20 - PACIFICINTERNET AP Pacific Internet Pte (AS4765)

IPv4APNICallocatedAS4765PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd RPKI Valid

CIDR

203.121.128.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇹🇭 SG

City

Bangkok

RIR

APNIC

Status

allocated

Allocated

2000-03-24

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
203.121.128.0/20	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	APNICOther IRR	2026-10-11

More-Specific Announcements

15 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
203.121.128.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.129.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.130.0/23	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.132.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.133.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.134.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.135.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.136.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.137.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.138.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.139.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.140.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.141.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.142.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11
203.121.143.0/24	AS4765 PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.121.128.0/20	AS4765	/20	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS4765	APNIC	MAINT-SG-PACIFIC	2019-03-26
AS4765	Other IRR	MAINT-AS4637	2023-11-13

More Specific Prefixes

Prefix	AS	Country	Status
203.121.128.0/24	AS4765	🇹🇭TH	assigned
203.121.129.0/24	AS4765	🇹🇭TH	assigned
203.121.130.0/24		🇹🇭TH	assigned
203.121.131.0/24		🇹🇭TH	assigned
203.121.132.0/24	AS4765	🇹🇭TH	assigned
203.121.133.0/24	AS4765	🇹🇭TH	assigned
203.121.134.0/24	AS4765	🇹🇭TH	assigned
203.121.134.32/27		🇹🇭TH	assigned
203.121.135.0/24	AS4765	🇹🇭TH	assigned
203.121.136.0/24	AS4765	🇹🇭TH	assigned
203.121.137.0/24	AS4765	🇹🇭TH	assigned
203.121.138.0/24	AS4765	🇹🇭TH	assigned
203.121.139.0/24	AS4765	🇹🇭TH	assigned
203.121.140.0/24	AS4765	🇹🇭TH	assigned
203.121.141.0/24	AS4765	🇹🇭TH	assigned
203.121.142.0/24	AS4765	🇹🇭TH	assigned
203.121.143.0/24	AS4765	🇹🇭TH	assigned

Origin ASN

AS4765

PACIFICINTERNET-AS-AP Pacific Internet Pte Ltd

Related Prefixes

More prefixes of AS4765

All prefixes of AS4765 →

Geolocation

Country🇹🇭SGTH

CityBangkok

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/203.121.128.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/203.121.128.0/20" | jq

External Links

RIPEstat