asn.dev

Autonomous system

AS18671 PRTC-SC

Unclassified ARIN

IPv4 addresses 11.26K 20 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 3 3 downstream
Flagged prefixes 0 none

Summary

PRTC

United States of America · AI-generated

residential rural telecom sc

The AS handle PRTC-SC is held by PRTC, a rural telecommunications provider serving the South Carolina Lowcountry.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries such as dynamic-66-180-233-255.lowcountry.com and netnames like PRTC-6 and PRTC-BLK1.
  • With 11,264 IPv4 addresses announced across 20 prefixes and only 6 observed neighbours, the high address-to-neighbour ratio indicates an access or eyeball network rather than a transit provider.

Notable

  • Registrants are consistent with the announcer, appearing as PRTC and PALMETTO RURAL Telephone across the largest prefixes.
  • The address inventory is finely subdivided into multiple /23 and /24 blocks, reflecting site-by-site segmentation typical of a rural cooperative expanding its footprint.
  • PRTC operates as a locally owned company providing high-speed internet, video, and telephone services in the region.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

3 upstream, 3 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS16863Home Telephone Company, Inc.807
AS2711Spirit Communications772
AS26744Planters Communications, LLC470

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 20 prefixes · 11.26K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America20

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18671
Registry name
PRTC-SC
Registrant
PRTC
Abuse contact
noc@prtc.coop
Registered
2014-02-19
Last changed
2014-02-19
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
57% valid · 20 valid, 15 with no ROA
ROAs
2 authorising AS18671
ASPA
no ASPA record
IRR
100% registered · 35 of 35 announcements
Route objects
93 naming AS18671

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,779 prefixes, as published 2026-10-22. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check