Autonomous system
AS35891 NLB-ASN
Residential ARIN Cable/DSL/ISP
Summary
Norwood Light Broadband
cable residential municipal isp
NLB-ASN is operated by Norwood Light Broadband, a community-owned utility in Massachusetts.
What it's used for
- The space carries residential cable and DSL access, evidenced by reverse DNS entries such as
dhcp-38-70-c-68-eb-84.cpe.norwoodlight.comandmta-0-15-d0-53-25-b0.mta.norwoodlight.com. - The AS announces 8448 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, while maintaining only 4 observed neighbours, a ratio indicative of a local access network rather than a transit provider.
Notable
- All registrants for the announced prefixes are listed as Norwood Light Broadband with the netname
NORWOOD-LIGHT-NETWORK, fully aligning with the AS holder. - Norwood Light is the only community-owned electric and broadband provider exclusively serving Norwood, Massachusetts, delivering both electricity and internet services to its residents.
- The address inventory consists of five distinct IPv4 blocks ranging from /20 to /24, all registered under the same netname, reflecting a consolidated municipal utility estate.
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
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Boston Internet Exchange | Boston, United States | 206.108.236.50 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 8.45K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS35891- Registry name
- NLB-ASN
- Registrant
- Norwood Light Broadband
- Abuse contact
- abuse@norwoodlight.com
- Registered
- 2005-04-04
- Last changed
- 2022-06-06
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Norwood Light Broadband
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-NORWOOD- Present at
- 1 exchanges
- Facilities
- 1 facilities
- Website
- http://www.norwoodlight.com
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 83% valid · 5 valid, 1 with no ROA
- ROAs
- 5 authorising AS35891
- ASPA
- no ASPA record
- IRR
- 100% registered · 6 of 6 announcements
- Route objects
- 52 naming AS35891
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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