Home Prefix Lookup199.100.0.0/16

199.100.0.0/16 - Cogent Communications (AS174)

IPv4ARINallocatedAS174COGENT-174 - Cogent Communications, LLCNo ROA

CIDR

199.100.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇧🇷 Brazil

City

TAMBORÉ

RIR

ARIN

Status

allocated

Allocated

1993-12-30

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
199.100.0.0/16	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	Other IRR	2026-10-14

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS174	Other IRR	MAINT-AS174	2023-11-13

Transfer History

Registry transfers of 199.100.0.0/16, blocks inside it, or blocks containing it.

199.100.0.0/16M&A · 2025-09-23
PSINet, Inc.
🇺🇸 US ARIN
→
Cogent Communications
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-09-23	199.100.0.0/16	PSINet, Inc. 🇺🇸 US ARIN	Cogent Communications 🇺🇸 US ARIN	M&A

Origin ASN

AS174

COGENT-174 - Cogent Communications, LLC

Related Prefixes

More prefixes of AS174

All prefixes of AS174 →

Geolocation

Country🇧🇷BrazilBR

CityTAMBORÉ

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/199.100.0.0/16

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/199.100.0.0/16" | jq

External Links

RIPEstat