asn.dev

Autonomous system

AS13671 VRIS-AS-BLOCK

Unclassified ARIN

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Verizon Business

United States · AI-generated

transit telecom isp

A single block whose netname records the year, the product and the sequence number of an allocation made for dial-up.

What it's used for

  • A carrier-held AS. 512 addresses in the single IPv4 prefix 68.128.232.0/23, one observed BGP neighbour, and no IPv6 announced.

Notable

  • The block is netname NETBLK-UUNET97DU-3BLK, registered to the carrier with an abuse contact.
  • The netname stacks four things: the words for network block, a former carrier's name, a two-digit year with a product abbreviation, and a counter with the words for block again.
  • The AS handle is VRIS-AS-BLOCK, shared with other AS numbers rather than naming this one.
  • Three addresses were queried for reverse DNS and none returned a name.

Interesting

  • Two-digit years in identifiers are a habit that predates the anxiety about them and survived it. This one dates the allocation to a period when the abbreviation for dial-up was worth putting in the field, because there was more than one kind of access to distinguish.
  • The word for network block appears twice in one netname, once at the front and once at the end, so the field says what it is, whose it is, when it was cut, and that it is a block, twice.
  • Space cut for modems, in the year the netname records, is still announced, still routed, and now carries whatever the carrier moved onto it.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS1383Verizon Business118

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, 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 · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS13661
Registry name
VRIS-AS-BLOCK
Registrant
Verizon Business
Abuse contact
abuse@verizon.com
Registered
1999-07-27
Last changed
2022-05-31
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
8 authorising AS13671
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
9 naming AS13671

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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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