Home Prefix Lookup81.31.0.0/20

81.31.0.0/20 - BGP Prefix

IPv4RIPE NCCallocatedNo ROA

CIDR

81.31.0.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇺🇸 United States

City

Washington D.C.

RIR

RIPE NCC

Status

allocated

Allocated

2002-05-28

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

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Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not currently announced in BGP. See covering prefix below.

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
81.31.0.0/19	AS3257 GTT-BACKBONE GTT Communications Inc.	No ROA	-	2026-10-12

More Specific Prefixes

Prefix	Country	Status
81.31.0.0/24	🇺🇸US	assigned
81.31.1.0/27	🇺🇸US	assigned
81.31.1.32/28	🇺🇸US	assigned
81.31.1.48/28	🇺🇸US	assigned
81.31.1.64/28	🇺🇸US	assigned
81.31.2.0/24	🇺🇸US	assigned
81.31.3.0/24	🇺🇸US	assigned
81.31.4.0/24	🇹🇷TR	assigned
81.31.5.0/27	🇹🇷TR	assigned
81.31.5.64/28	🇹🇷TR	assigned
81.31.5.80/28	🇹🇷TR	assigned
81.31.5.96/29	🇹🇷TR	assigned
81.31.5.104/29	🇹🇷TR	assigned
81.31.5.112/29	🇹🇷TR	assigned
81.31.5.120/29	🇹🇷TR	assigned
81.31.5.128/29	🇹🇷TR	assigned
81.31.6.0/24	🇸🇰SK	assigned
81.31.7.32/27	🇸🇰SK	assigned
81.31.7.64/28	🇸🇰SK	assigned
81.31.8.0/24	🇫🇷FR	assigned
81.31.9.0/26	🇫🇷FR	assigned
81.31.9.64/26	🇫🇷FR	assigned
81.31.9.128/27	🇫🇷FR	assigned
81.31.9.160/27	🇫🇷FR	assigned
81.31.10.0/24	🇫🇷FR	assigned
81.31.11.0/25	🇫🇷FR	assigned
81.31.12.0/24	🇫🇷FR	assigned
81.31.13.0/24	🇫🇷FR	assigned
81.31.14.0/24	🇫🇷FR	assigned
81.31.15.0/24	🇫🇷FR	assigned

Transfer History

Registry transfers of 81.31.0.0/20, blocks inside it, or blocks containing it.

81.31.0.0/20Transfer · 2021-03-22
Interoute Communications Limited
RIPE NCC
→
GTT Communications Inc.
RIPE NCC

Date	Resource	From	To	Type
2021-03-22	81.31.0.0/20	Interoute Communications Limited RIPE NCC	GTT Communications Inc. RIPE NCC	Transfer

Related Prefixes

Covering prefix

81.31.0.0/19AS3257

Geolocation

Country🇺🇸United StatesUS

RegionDistrict of Columbia

CityWashington D.C.

Coordinates38.9072, -77.0369 ↗

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 RIPE NCC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/81.31.0.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/81.31.0.0/20" | jq

External Links

RIPEstat