Home Prefix Lookup203.6.0.0/18

203.6.0.0/18 - OPTUSCOM AS01 AU SingTel Optus Pty (AS7474)

IPv4APNICassignedAS7474OPTUSCOM-AS01-AU SingTel Optus Pty Ltd RPKI Valid

CIDR

203.6.0.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇦🇺 Australia

City

Queanbeyan

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
203.6.0.0/18	AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd	Valid	APNIC	2026-10-11

More-Specific Announcements

5 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
203.6.8.0/22	AS7575 AARNET-AS-AP Australian Academic and Research Network AARNet	Valid	-	2026-10-11
203.6.31.0/24	AS9466 UUNET-JP-AP UUNET Japan Limited	Valid	-	2026-10-11
203.6.32.0/24	AS9466 UUNET-JP-AP UUNET Japan Limited	Valid	-	2026-10-11
203.6.33.0/24	AS9466 UUNET-JP-AP UUNET Japan Limited	Valid	-	2026-10-11
203.6.36.0/22	AS9466 UUNET-JP-AP UUNET Japan Limited	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
203.6.0.0/18	AS7474	/18	apnic

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS7474	APNIC	MAINT-AU-DEFENCE	2020-10-22

Origin ASN

AS7474

OPTUSCOM-AS01-AU SingTel Optus Pty Ltd

Related Prefixes

More prefixes of AS7474

All prefixes of AS7474 →

Geolocation

Country🇦🇺AustraliaAU

RegionNew South Wales

CityQueanbeyan

Coordinates-35.3484, 149.1980 ↗

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/203.6.0.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/203.6.0.0/18" | jq

External Links

RIPEstat