Home Prefix Lookup2600:5400:cd04::/48

2600:5400:cd04::/48 - Optimum (AS19108)

IPv6ARINannouncedAS19108SUDDENLINK-COMMUNICATIONS - OptimumNo ROA

CIDR

2600:5400:cd04::/48

IP Version

IPv6

Addresses

1.2Y

Mask

/48

Country

🇺🇸 United States

City

Washington D.C.

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
2600:5400:cd04::/48	AS19108 SUDDENLINK-COMMUNICATIONS - Optimum	No ROA	-	2026-10-11

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
2600:5400:8000::/33	AS19108 SUDDENLINK-COMMUNICATIONS - Optimum	No ROA	-	2026-10-11

Origin ASN

AS19108

SUDDENLINK-COMMUNICATIONS - Optimum

Related Prefixes

Covering prefix

2600:5400:8000::/33AS19108

More prefixes of AS19108

All prefixes of AS19108 →

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 ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/2600:5400:cd04::/48

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

curl -s "https://api.ipctl.io/v1/prefix/2600:5400:cd04::/48" | jq

External Links

RIPEstat