Home Prefix Lookup187.31.16.0/21

187.31.16.0/21 - (AS275675)

IPv4LACNICallocatedAS275675No ROA

CIDR

187.31.16.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇧🇷 Brazil

City

Fortaleza

RIR

LACNIC

Status

allocated

Allocated

2008-12-12

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

Related Announcements

2 less-specific, 5 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
187.31.0.0/16	AS14571 Oi S.A. - Em Recuperacao Judicial	No ROA	-	2026-10-11
187.31.0.0/16	AS29987 SINFONY6 - Sinfony6, LLC	No ROA	-	2026-10-11
187.31.16.0/24	AS29987 SINFONY6 - Sinfony6, LLC	No ROA	-	2026-10-11
187.31.17.0/24	AS29987 SINFONY6 - Sinfony6, LLC	No ROA	-	2026-10-11
187.31.18.0/24	AS29987 SINFONY6 - Sinfony6, LLC	No ROA	-	2026-10-11
187.31.19.0/24	AS29987 SINFONY6 - Sinfony6, LLC	No ROA	-	2026-10-11
187.31.20.0/24	AS29987 SINFONY6 - Sinfony6, LLC	No ROA	-	2026-10-11

Origin ASN

AS275675

Related Prefixes

Covering prefix

187.31.0.0/16AS14571

More prefixes of AS275675

2804:9834::/32

All prefixes of AS275675 →

Geolocation

Country🇧🇷BrazilBR

RegionCeará

CityFortaleza

Coordinates-3.7327, -38.5270 ↗

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 LACNIC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/187.31.16.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/187.31.16.0/21" | jq

External Links

RIPEstat