Home ASN LookupAS1

AS1 LVLT-1 - Level 3 Parent, LLC

🇺🇸

ARINassigned

Announced Prefixes (BGP)

15total

15 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)7,936

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

2001-09-20

Routing hygiene

Score 90/100 · High risk

RPKI ROA coverage

1 prefix RPKI invalid

IRR route objects

9 prefixes registered for another origin

Hijack signals

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

Upstreams

diversity 13/100

100% of announced prefixes (15 of 15) have no valid ROA, 1 of them RPKI invalid
Announces 1 prefix that RPKI assigns to another network (possible hijack or misconfiguration)
100% of announced prefixes (15 of 15) have no IRR route object for this ASN
2 prefixes registered in IRR route objects for another active network and not authorized by a ROA
Routes concentrated on one upstream (93% of routes)

Based on 15 announced prefixes, updated daily (2026-10-23). How the score works · RPKI explained

Announced Prefixes

(BGP)15

Prefix	RPKI	IRR	Last Seen
4.34.12.0/24	No ROA	-	2026-10-26
4.34.13.0/24	No ROA	-	2026-10-26
8.31.76.0/22	No ROA	-	2026-10-26
63.215.96.0/22	No ROA	-	2026-10-26
66.97.160.0/23MOAS	No ROA	-	2026-10-26
66.97.161.0/24MOAS	No ROA	-	2026-10-26
177.75.88.0/24	No ROA	-	2026-10-26
177.75.90.0/24	No ROA	-	2026-10-26
177.75.93.0/24	No ROA	-	2026-10-26
191.7.35.0/24MOAS	No ROA	-	2026-10-26

1-10 of 15

1 / 2

All 15 announced prefixes of AS1 →

Downstream Customers(1)

ASN	Name
AS210457	🇬🇧KYONIX Kyonix Networks Limited

BGP Neighbours

(seen in AS paths)

Upstreams (6)

Networks AS1 hands its own prefixes to: transit providers, or peers at an exchange.

AS11537Internet2121
AS262544RazaoInfo Internet Ltda3
AS396455CoverMyMeds2
AS7046Verizon Business1
AS29132IMAGEWORLD Easylinehost Finland Oy1
AS263309LaraNet Telecomunicacoes E Servicos EIRALI1

Downstreams (1)

Networks whose own prefixes AS1 passes on: usually its customers.

AS54043GOZFLY1

Other adjacent networks (1)

Adjacent to AS1 in the transit part of AS paths: peers, providers or customers.

AS264773GOZFLY S.A1

Transfer History

Registry transfers of AS1 between organisations.

AS1M&A · 2018-02-20
Level 3 Communications, Inc.
🇺🇸 US ARIN
→
Level 3 Parent, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2018-02-20	AS1	Level 3 Communications, Inc. 🇺🇸 US ARIN	Level 3 Parent, LLC 🇺🇸 US ARIN	M&A

ASPA

No ASPA0 upstreams, 1 downstream

Listed as Upstream Provider by

1 ASN

View full ASPA details →

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
How to run an ASPA checkVerify the upstream providers listed above
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/1

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

curl -s "https://api.ipctl.io/v1/asn/1" | jq