ASN AS1256 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS1256?

AS1256 is listed under UMASSNET.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS1256 UMASSNET | IPGeolocation.io

ASN Lookup Tool

Search ASN

AS Data

IP Routes

Raw Whois

Parsed Whois

Peers

Upstreams

Downstreams

Legacy Routes

UMASSNET umass.edu

US 0 Routes

AS Data

AS1256

AS1256 – UMASSNET

AS Number	1256
AS Name	MASSNET-AS
Organization	UMASSNET(umap)
Country	US
Website	umass.edu
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1991-04-26

ASN Intelligence API for production workflows

Use ASN data for AS1256 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       1256
ASName:         MASSNET-AS
ASHandle:       AS1256
RegDate:        1991-04-26
Updated:        2024-11-06    
Ref:            https://rdap.arin.net/registry/autnum/1256


OrgName:        UMASSNET
OrgId:          UMAP
Address:        Information Technology Services
Address:        333 South Street, Suite 400
City:           Shrewsbury
StateProv:      MA
PostalCode:     01545-4169
Country:        US
RegDate:        1989-08-10
Updated:        2025-02-19
Ref:            https://rdap.arin.net/registry/entity/UMAP


OrgNOCHandle: HOS634-ORG-ARIN
OrgNOCName:   Hostmaster
OrgNOCPhone:  +1-774-455-7750 
OrgNOCEmail:  hostmaster@umassp.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/HOS634-ORG-ARIN

OrgTechHandle: MELIC6-ARIN
OrgTechName:   Melican, Peter 
OrgTechPhone:  +1-508-612-1898 
OrgTechEmail:  pmelican@umass.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/MELIC6-ARIN

OrgTechHandle: BLOND3-ARIN
OrgTechName:   Blondin, Tim 
OrgTechPhone:  +1-413-530-6299 
OrgTechEmail:  tblondin@umass.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/BLOND3-ARIN

OrgAbuseHandle: HOS634-ORG-ARIN
OrgAbuseName:   Hostmaster
OrgAbusePhone:  +1-774-455-7750 
OrgAbuseEmail:  hostmaster@umassp.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HOS634-ORG-ARIN

OrgTechHandle: KEITH185-ARIN
OrgTechName:   Boisseau, Keith A
OrgTechPhone:  +1-508-614-8193 
OrgTechEmail:  kboisseau@umass.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/KEITH185-ARIN

OrgTechHandle: KOKOS-ARIN
OrgTechName:   Kokoszyna, Dave 
OrgTechPhone:  +1-774-317-1270 
OrgTechEmail:  davek@umass.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/KOKOS-ARIN

RNOCHandle: HOS634-ORG-ARIN
RNOCName:   Hostmaster
RNOCPhone:  +1-774-455-7750 
RNOCEmail:  hostmaster@umassp.edu
RNOCRef:    https://rdap.arin.net/registry/entity/HOS634-ORG-ARIN

RTechHandle: KOKOS-ARIN
RTechName:   Kokoszyna, Dave 
RTechPhone:  +1-774-317-1270 
RTechEmail:  davek@umass.edu
RTechRef:    https://rdap.arin.net/registry/entity/KOKOS-ARIN

RTechHandle: WILHE57-ARIN
RTechName:   Wilhelm, Matt 
RTechPhone:  +1-413-542-8560 
RTechEmail:  mwilhelm@amherst.edu
RTechRef:    https://rdap.arin.net/registry/entity/WILHE57-ARIN

RAbuseHandle: HOS634-ORG-ARIN
RAbuseName:   Hostmaster
RAbusePhone:  +1-774-455-7750 
RAbuseEmail:  hostmaster@umassp.edu
RAbuseRef:    https://rdap.arin.net/registry/entity/HOS634-ORG-ARIN

RTechHandle: BLOND3-ARIN
RTechName:   Blondin, Tim 
RTechPhone:  +1-413-530-6299 
RTechEmail:  tblondin@umass.edu
RTechRef:    https://rdap.arin.net/registry/entity/BLOND3-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

ASN Lookup Tool

ASN Summary

AS1256 – UMASSNET

ASN Intelligence API for production workflows

Raw Whois Response

Parsed Whois Response

Ready to get started?Get Started with IP Intelligence API Today

Frequently Asked Questions