Home ASN LookupAS6389

AS6389 BELLSOUTH-NET-BLK - AT&T Enterprises, LLC

ASPA Published

Announced Prefixes (BGP)

56total

56 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)3.3M

Announced (BGP)4.6M

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

5,000

Prefix Limit (IPv6)

Allocated

Routing hygiene

Score 32/100 · Medium risk

RPKI ROA coverage

51.8%

no RPKI invalid prefixes

IRR route objects

51.8%

1 prefix registered for another origin

Hijack signals

0 announced against others' ROAs, 1 own announced by others

Upstreams

diversity 4/100

48% of announced prefixes (27 of 56) have no valid ROA
Routes concentrated on one upstream (98% of routes)
48% of announced prefixes (27 of 56) have no IRR route object for this ASN

Based on 56 announced prefixes, updated daily (2026-10-19). How the score works · RPKI explained

Announced Prefixes

(BGP)56

Prefix	RPKI	IRR	Last Seen
12.130.209.0/24	No ROA	-	2026-10-26
65.5.0.0/16	No ROA	-	2026-10-26
65.13.0.0/16	Valid	ARIN	2026-10-26
65.14.0.0/16	No ROA	-	2026-10-26
65.15.0.0/16	Valid	ARIN	2026-10-26
65.81.0.0/16	Valid	ARIN	2026-10-26
65.82.0.0/16	No ROA	-	2026-10-26
65.83.0.0/16	Valid	ARIN	2026-10-26
65.83.236.0/22	Valid	ARIN	2026-10-26
66.20.0.0/15	No ROA	-	2026-10-26

1-10 of 56

1 / 6

Allocated Prefixes

(RIR)31

Prefix	Country	RIR	Status
65.5.0.0/16	🇺🇸 US	ARIN	allocated
65.13.0.0/16	🇺🇸 US	ARIN	allocated
65.81.0.0/16	🇺🇸 US	ARIN	allocated
66.20.0.0/15	🇺🇸 US	ARIN	allocated
68.16.0.0/15	🇺🇸 US	ARIN	allocated
68.152.0.0/15	🇺🇸 US	ARIN	allocated
68.156.0.0/15	🇺🇸 US	ARIN	allocated
68.208.0.0/16	🇺🇸 US	ARIN	allocated
68.213.0.0/16	🇺🇸 US	ARIN	allocated
68.214.0.0/16	🇺🇸 US	ARIN	allocated

1-10 of 31

1 / 4

All 56 announced prefixes of AS6389 →

Upstream Providers(1)

ASN	Name
AS7018	🇺🇸ATT-INTERNET4 - AT&T Enterprises, LLC

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS6389 hands its own prefixes to: transit providers, or peers at an exchange.

AS7018AT&T Enterprises55
AS29802HIVELOCITY1

Downstreams (1)

Networks whose own prefixes AS6389 passes on: usually its customers.

AS11712AT&T Services1

Transfer History

Registry transfers of AS6389 between organisations.

AS6380-AS6389M&A · 2024-12-05
AT&T Corp.
🇺🇸 US ARIN
→
AT&T Enterprises, LLC
🇺🇸 US ARIN
AS6380-AS6389M&A · 2018-12-06
BellSouth.net Inc.
🇺🇸 US ARIN
→
AT&T Corp.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2024-12-05	AS6380-AS6389	AT&T Corp. 🇺🇸 US ARIN	AT&T Enterprises, LLC 🇺🇸 US ARIN	M&A
2018-12-06	AS6380-AS6389	BellSouth.net Inc. 🇺🇸 US ARIN	AT&T Corp. 🇺🇸 US ARIN	M&A

ASPA

Published1 upstream, 0 downstreams

Authorized Upstream Providers

AS7018

Expires 2026-10-27

View full ASPA details →

External Links

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
How to run an ASPA checkVerify the upstream providers listed above
IPv4 transfer marketTransfers published by all five RIRs
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/6389

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

curl -s "https://api.ipctl.io/v1/asn/6389" | jq