Home ASN LookupAS4851

AS4851 HOSTNETWORKS-AS-AU-AP Host Networks

🇦🇺

Org handle: ORG-HN1-AP

Host Networks

APNICallocated

Announced Prefixes (BGP)

37total

34 IPv43 IPv6

IPv4 Addresses

Allocated (RIR)20,480

Announced (BGP)36,096

IPv6 Addresses

Allocated (RIR)3.1×10²⁹

Announced (BGP)2.3×10²⁹

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇦🇺 AU

RIR

APNIC

Status

allocated

Allocated

2005-01-11

Announced Prefixes

(BGP)37

Prefix	RPKI	IRR	Last Seen
103.74.216.0/22	No ROA	Other IRR	2026-10-11
103.74.217.0/24	Valid	APNIC	2026-10-11
103.74.218.0/23	Valid	APNIC	2026-10-11
103.77.144.0/22	Valid	APNICOther IRR	2026-10-11
103.77.144.0/23	Valid	APNICOther IRR	2026-10-11
103.77.146.0/23	Valid	APNICOther IRR	2026-10-11
103.194.229.0/24	Valid	APNICOther IRR	2026-10-11
103.196.148.0/22	No ROA	Other IRR	2026-10-11
103.206.187.0/24	Valid	APNICOther IRR	2026-10-11
117.120.40.0/21	No ROA	RIPE	2026-10-11

1-10 of 37

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Allocated Prefixes

(RIR)15

Prefix	Country	RIR	Status
103.74.216.0/22	🇦🇺 AU	APNIC	allocated
103.74.217.0/24	🇦🇺 AU	APNIC	assigned
103.77.144.0/22	🇦🇺 AU	APNIC	allocated
103.194.229.0/24	🇦🇺 AU	APNIC	assigned
103.196.148.0/22	🇦🇺 AU	APNIC	allocated
103.206.187.0/24	🇦🇺 AU	APNIC	assigned
117.120.40.0/21	🇺🇸 US	RIPENCC	allocated
119.148.64.0/19	🇺🇸 US	RIPENCC	allocated
119.148.88.0/21	🇿🇿 ZZ	APNIC	assigned
202.128.106.0/24	🇦🇺 AU	APNIC	assigned

1-10 of 15

1 / 2

All 37 announced prefixes of AS4851 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS4851 hands its own prefixes to: transit providers, or peers at an exchange.

AS58511ANYCAST GLOBAL BACKBONE Anycast Global Backbone21
AS63956INT 5GN AP 5G NETWORK OPERATIONS PTY16

Downstreams (6)

Networks whose own prefixes AS4851 passes on: usually its customers.

AS23727MANSOL AU Managed Solutions Internet AS Internet Service Provider6
AS56057ENTITYDATA AU Entity Data Pty Limited5
AS58929DPLTAGN AP Datbury Pty5
AS139279OPTIMISEDSOLUTIONS AP OPTIMISED SOLUTIONS2
AS132498ASPEDIAAUSTRALIA AP ASPEDIA AUSTRALIA PTY1
AS150438SHPL AP Secure ISS Holdings Pty1

Other adjacent networks (1)

Adjacent to AS4851 in the transit part of AS paths: peers, providers or customers.

AS136557HOST AP Host Universal Pty1

ASPA

No ASPA

External Links

APNIC Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS4851 should publish an ASPA object
IPv4 transfers in the APNIC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/4851

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/4851" | jq