Home Prefix Lookup203.11.66.0/23

203.11.66.0/23 - Australian Academic And Research Network (AARNet) (AS7575)

IPv4APNICassignedAS7575AARNET-AS-AP - Australian Academic and Research Network (AARNet)No ROA

CIDR

203.11.66.0/23

IP Version

IPv4

Addresses

512

Mask

/23 (255.255.254.0)

Country

🇦🇺 Australia

City

Sydney

RIR

APNIC

Status

assigned

Allocated

1994-12-23

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
203.11.66.0/23	AS7575 AARNET-AS-AP - Australian Academic and Research Network (AARNet)	No ROA	Other IRR	2026-10-12

More-Specific Announcements

1 more-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
203.11.66.0/24	AS7575 AARNET-AS-AP - Australian Academic and Research Network (AARNet)	No ROA	-	2026-10-12

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS38195	Other IRR	MAINT-AS2764	2023-11-13
AS17498	Other IRR	MAINT-AS2764	2023-11-13
AS7545	Other IRR	MAINT-AS2764	2023-11-13
AS7575	Other IRR	MAINT-ASAARNET	2023-11-13
AS7604	Other IRR	MAINT-AS2764	2023-11-13

Origin ASN

AS7575

AARNET-AS-AP - Australian Academic and Research Network (AARNet)

Related Prefixes

More prefixes of AS7575

All prefixes of AS7575 →

Geolocation

Country🇦🇺AustraliaAU

RegionNew South Wales

CitySydney

Coordinates-33.8688, 151.2090 ↗

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/203.11.66.0/23

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

curl -s "https://api.ipctl.io/v1/prefix/203.11.66.0/23" | jq

External Links

RIPEstat