asn.dev

Autonomous system

AS31857 ZFP-ASN-1

Residential ARIN

IPv4 addresses 10.75K 8 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Ziply Fiber

United States of America · AI-generated

isp fiber residential regional

ZFP-ASN-1 is operated by Ziply Fiber, a regional fiber-optic internet service provider in the Pacific Northwest.

What it's used for

  • The address space carries residential customer traffic, evidenced by reverse DNS entries like 69-28-43-254.cust.ptera.net and netnames such as ZFP-PTERA-IPV4-5.
  • With 10,752 IPv4 addresses announced across 8 prefixes and only 1 observed neighbour, the high address-to-neighbour ratio indicates an access network rather than a transit provider.

Notable

  • Registrants are split between Ziply Fiber and Ptera Inc., reflecting the March 2023 acquisition of Ptera by Ziply Fiber; netnames like VCN-PTERA-02 and PTERA-CGNT-NET-1 retain the former company's identity.
  • The inventory includes a mix of /20, /21, /22, and /24 blocks, with the largest being 69.28.32.0/20, alongside a single IPv6 prefix 2604:3b80::/32.

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

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS20055Wholesail networks LLC492

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 8 prefixes · 10.75K addresses IPv6 1 prefixes

CountryNamePrefixes
USUnited States of America9

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS31857
Registry name
ZFP-ASN-1
Registrant
Ziply Fiber
Abuse contact
DMCANotice@nwfbr.com
Registered
2004-01-09
Last changed
2023-05-15
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
89% valid · 8 valid, 1 with no ROA
ROAs
8 authorising AS31857
ASPA
no ASPA record
IRR
89% registered · 8 of 9 announcements
Route objects
9 naming AS31857

Reputation

Classification and threat

Residential Fixed-line consumer ISP. Addresses here are homes.

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 1,783 prefixes, as published 2026-10-17. 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