asn.dev

Autonomous system

AS20167 BLAST-IU17

Unclassified ARIN

IPv4 addresses 4.10K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

BLaST Intermediate Unit #17

United States of America · AI-generated

education k12 network usa

The AS handle BLAST-IU17 is held by BLaST Intermediate Unit #17.

What it's used for

  • The space carries educational network traffic, evidenced by the reverse DNS record host254.iu17.org and the registrant netname BLAST-IU17.
  • The AS announces 4096 IPv4 addresses across 1 prefix (173.46.208.0/20) and maintains 3 observed neighbours, a ratio consistent with a local access or institutional network rather than a transit provider.

Notable

  • The RDAP registrant BLaST Intermediate Unit #17 matches the AS holder, confirming direct ownership of the address space.
  • The address inventory consists of a single contiguous /20 block, indicating a unified internal network estate for the school district.

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

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

ASNetworkPaths seen
AS26801Zito Media, L.P.45
AS13536FirstLight Fiber, Inc.13

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 1 prefixes · 4.10K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS20167
Registry name
BLAST-IU17
Registrant
BLaST Intermediate Unit #17
Abuse contact
noc@iu17.org
Registered
2009-12-23
Last changed
2012-03-02
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS20167
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
8 naming AS20167

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 1,784 prefixes, as published 2026-10-19. 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