Home ASN LookupAS4473

AS4473 ATTIS-ASN4473 - AT&T Enterprises, LLC

🇺🇸

ARINassigned

Announced Prefixes (BGP)

32total

32 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)256

Announced (BGP)78,336

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

1995-03-08

Announced Prefixes

(BGP)32

Prefix	RPKI	IRR	Last Seen
12.17.241.0/24	No ROA	-	2026-10-10
12.29.116.0/24	No ROA	-	2026-10-10
12.29.117.0/24	No ROA	-	2026-10-10
12.29.118.0/24	No ROA	-	2026-10-10
12.29.119.0/24	No ROA	-	2026-10-10
12.71.77.0/24	No ROA	-	2026-10-10
12.96.45.0/24	No ROA	-	2026-10-10
12.96.46.0/24	No ROA	-	2026-10-10
12.97.148.0/24	No ROA	-	2026-10-10
12.105.210.0/24	No ROA	-	2026-10-10

1-10 of 32

1 / 4

Allocated Prefixes

(RIR)1

Prefix	Country	RIR	Status
198.183.168.0/24	🇺🇸 US	ARIN	allocated

All 32 announced prefixes of AS4473 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS4473 hands its own prefixes to: transit providers, or peers at an exchange.

AS7018AT&T Enterprises32

Other adjacent networks (1)

Adjacent to AS4473 in the transit part of AS paths: peers, providers or customers.

AS13979AT&T Enterprises66

Transfer History

Registry transfers of AS4473 between organisations.

AS4473M&A · 2024-12-05
AT&T Corp.
🇺🇸 US ARIN
→
AT&T Enterprises, LLC
🇺🇸 US ARIN
AS4473M&A · 2018-07-18
AT&T Internet Services
🇺🇸 US ARIN
→
AT&T Corp.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2024-12-05	AS4473	AT&T Corp. 🇺🇸 US ARIN	AT&T Enterprises, LLC 🇺🇸 US ARIN	M&A
2018-07-18	AS4473	AT&T Internet Services 🇺🇸 US ARIN	AT&T Corp. 🇺🇸 US ARIN	M&A

ASPA

No ASPA

External Links

ARIN 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 AS4473 should publish an ASPA object
IPv4 transfers in the ARIN 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/4473

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

curl -s "https://api.ipctl.io/v1/asn/4473" | jq