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AS81 · Registration country: US US — MCNC

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NCREN · ARIN · Registration country: US US

Identity sourceAS81 · Registration country: US US MCNC

NRO allocation data

132IPv4 prefixes
4IPv6 prefixes
41Observed neighbors
RPKIValid: 106Invalid: 0Not found: 30Unknown: 0

Selected local snapshot coverage; not the whole Internet. BGP snapshots: ris-rrc00 11 Oct 00:00 UTC; routeviews2 11 Oct 06:00 UTC; routeviews6 11 Oct 04:00 UTC. Validator: 11 Oct 06:22 UTC. Publication-point issues: 90

Address space details

Overlapping originated prefixes counted once. IPv4 addresses: 1,995,520

IPv6 addresses: 1347497732762136429227696717824

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Observed originated prefixes

These are observed BGP origins, not an inventory of registered allocations or transit reachability.

Advanced filters

136 matching prefix–origin pairs. Each pair appears once; source observations are in Details.

PrefixRPKILast observedDetails
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Not Found
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI not_found
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI not_found
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid
Valid
11 Oct 06:00 UTC
2 source observations
  • ris-rrc00 · 2026-10-11T00:00:00+00:00 · 1 selected peers · RPKI valid
  • routeviews2 · 2026-10-11T06:00:00+00:00 · 1 selected peers · RPKI valid

Next rows

Export observed prefixes: TXT · CSV · JSON

Observed AS neighbors

41 unique neighbors in the selected local snapshots. This is the available collector dataset, not a complete map of the Internet. Adjacency does not establish upstream service or peering.

41 matching neighbors · 26–41 shown

NetworkIPv4/IPv6Seen inLast observedDetails
AS53384 · Registration country: US US UNCC-AS - University of North Carolina at Charlotte
IPv4, IPv6
ris-rrc00, routeviews2, routeviews6
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
  • ris-rrc00 · IPv6 · 11 Oct 00:00 UTC
  • routeviews6 · IPv6 · 11 Oct 04:00 UTC
AS53785 · Registration country: US US UNC-GREENSBORO - University of North Carolina at Greensboro
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS393824 · Registration country: US US APOG-LENOIR-RHYNE - Apogee Telecom Inc.
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS393875 · Registration country: US US UMO-AS - University of Mount Olive, Inc.
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS394165 · Registration country: US US COGNC - City of Greenville, NC
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS394407 · Registration country: US US CCCC-NC - Central Carolina Community College
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS395465 · Registration country: US US APOG-UNCC-SOUTH - Apogee Telecom Inc.
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS396028 · Registration country: US US VIDANTHEALTH - Vidant Health
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS396391 · Registration country: US US GUILFORD-COLLEGE - Guilford College
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS396978 · Registration country: US US ORANGE-WATER-SEWER-AUTHORITY - Orange Water and Sewer Authority
IPv4, IPv6
ris-rrc00, routeviews2, routeviews6
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
  • ris-rrc00 · IPv6 · 11 Oct 00:00 UTC
  • routeviews6 · IPv6 · 11 Oct 04:00 UTC
AS398580 · Registration country: US US QUEENS-UNIV-CLT-01 - Queens University of Charlotte
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS399050 · Registration country: US US ROW-CAB-01 - Rowan-Cabarrus Community College
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS399407 · Registration country: US US SALEM-AC-01 - Salem Academy and College
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS399565 · Registration country unavailable SHAWU-AS01 - Shaw University
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS399708 · Registration country: US US NCWC-ARIN-ASN - North Carolina Wesleyan College
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC
AS400959 · Registration country: US US CARYNC - Town of Cary
IPv4
ris-rrc00, routeviews2
11 Oct 06:00 UTC
Source observations
  • ris-rrc00 · IPv4 · 11 Oct 00:00 UTC
  • routeviews2 · IPv4 · 11 Oct 06:00 UTC

Previous neighbors

Clear neighbor filters

View observed neighbor graph (up to 15 AS nodes)

Lines mean observed adjacency, with no commercial direction inferred. The table above provides the same evidence and source times.

Showing 14 of 41 matching neighbors, in table sort order, independent of table page.

AS81AS174AS3356AS6461AS6559AS7018AS10952AS11164AS11426AS11442AS13371AS13862AS18538AS19161AS19413

Peering & locations

Loading public source data…

Registry information

ARIN · fetched 10 Oct 21:05 UTC

Resource name
NCREN
Handle
AS81
RDAP country
Not supplied
ASN
81

Registered organizations

Last Changed: 10 Jun 17:54 UTC

Registration: 07 Aug 1986 04:00 UTC

Registry contacts and maintainers
  • NH34-ORG-ARIN · technical
Official registry record

Registry source

Allocation statistics

NRO/RIR delegated-extended records describe allocation or assignment ranges. They do not prove a BGP announcement or replace more-specific RDAP registration information. Country is the allocation record’s registration country, not the physical location of every address.

NRO data and format

Prefix count history

Uses the public RIPEstat Data API when requested.

Local observation changes

Only comparable successful snapshots are compared. First imports, changed peer coverage and collection gaps are baselines, not new global routes or withdrawals. RPKI transition history is not available before it has been recorded.

No retained changes are available for this resource.

Retained local prefix-count observations

Separate collector series. Missing rows are not zero. Peer-set changes are separate coverage, not a continuous trend.

SourceSnapshotFamilyPrefixesPeer coverage
routeviews2
11 Oct 06:00 UTC
IPv4
132
140.192.8.16/IPv4
routeviews2
11 Oct 04:00 UTC
IPv4
132
140.192.8.16/IPv4
routeviews6
11 Oct 04:00 UTC
IPv6
4
2406:840:feed:2::1/IPv6
routeviews2
11 Oct 02:00 UTC
IPv4
132
140.192.8.16/IPv4
routeviews6
11 Oct 02:00 UTC
IPv6
4
2406:840:feed:2::1/IPv6
ris-rrc00
11 Oct 00:00 UTC
IPv6
4
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
11 Oct 00:00 UTC
IPv4
132
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
10 Oct 16:00 UTC
IPv6
4
2a00:5884::6/IPv6, 89.234.186.6/IPv4
ris-rrc00
10 Oct 16:00 UTC
IPv4
132
2a00:5884::6/IPv6, 89.234.186.6/IPv4