Home ASN LookupAS16557

AS16557 COLOSOLUTIONS - Colo Solutions

🇺🇸

ARINassigned

Announced Prefixes (BGP)

31total

30 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)9,216

Announced (BGP)19,712

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇺🇸 US

RIR

ARIN

Status

assigned

Allocated

2000-05-22

Routing hygiene

Score 13/100 · Low risk

RPKI ROA coverage

77.4%

no RPKI invalid prefixes

IRR route objects

96.8%

no origin mismatches

Hijack signals

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

Upstreams

diversity 41/100

23% of announced prefixes (7 of 31) have no valid ROA

Based on 31 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained

Announced Prefixes

(BGP)31

Prefix	RPKI	IRR	Last Seen
66.103.128.0/19	No ROA	-	2026-10-26
66.103.128.0/20	Valid	ARINOther IRR	2026-10-26
66.103.128.0/24	Valid	ARINOther IRR	2026-10-26
66.103.129.0/24	Valid	Other IRR	2026-10-26
66.103.130.0/24	Valid	Other IRR	2026-10-26
66.103.131.0/24	Valid	Other IRR	2026-10-26
66.103.132.0/24	Valid	-	2026-10-26
66.103.133.0/24	Valid	Other IRR	2026-10-26
66.103.134.0/24	Valid	Other IRR	2026-10-26
66.103.135.0/24	Valid	Other IRR	2026-10-26

1-10 of 31

1 / 4

Allocated Prefixes

(RIR)10

Prefix	Country	RIR	Status
66.103.128.0/20	🇺🇸 US	ARIN	allocated
66.103.144.0/21	🇺🇸 US	ARIN	allocated
66.103.156.0/23	🇺🇸 US	ARIN	allocated
72.21.8.0/23	🇺🇸 US	ARIN	allocated
72.21.12.0/22	🇺🇸 US	ARIN	allocated
72.21.20.0/24	🇺🇸 US	ARIN	allocated
72.21.22.0/24	🇺🇸 US	ARIN	allocated
192.160.196.0/24	🇺🇸 US	ARIN	allocated
198.252.144.0/24	🇺🇸 US	ARIN	allocated
2607:f528::/32	🇺🇸 US	ARIN	allocated

All 31 announced prefixes of AS16557 →

Downstream Customers(1)

ASN	Name
AS31940	🇺🇸INTERNATIONAL-TELNET-INC - International Telnet Inc.

BGP Neighbours

(seen in AS paths)

Upstreams (3)

Networks AS16557 hands its own prefixes to: transit providers, or peers at an exchange.

AS33132Crown Castle Fiber25
AS174Cogent Communications5
AS6515DACS IX1

Downstreams (5)

Networks whose own prefixes AS16557 passes on: usually its customers.

AS32083Omnispring21
AS399765FasNET Services5
AS22805CNL Financial Group1
AS31940International Telnet1
AS401511Mullinax Ford1

Other adjacent networks (1)

Adjacent to AS16557 in the transit part of AS paths: peers, providers or customers.

AS3356Level 3 Parent25

Transfer History

Registry transfers of AS16557 between organisations.

AS16557M&A · 2022-08-29
Colo Solutions Group, LLC
🇺🇸 US ARIN
→
Colo Solutions
🇺🇸 US ARIN
AS16557M&A · 2018-07-30
Colo Solutions, Inc.
🇺🇸 US ARIN
→
Colo Solutions Group, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2022-08-29	AS16557	Colo Solutions Group, LLC 🇺🇸 US ARIN	Colo Solutions 🇺🇸 US ARIN	M&A
2018-07-30	AS16557	Colo Solutions, Inc. 🇺🇸 US ARIN	Colo Solutions Group, 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/16557

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

curl -s "https://api.ipctl.io/v1/asn/16557" | jq