ASN AS21527 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21527?

AS21527 is listed under Daystarr Communications.

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?

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AS21527 Daystarr Communications

ASN Lookup Tool

Daystarr Communications daystarr.net

US 25 Routes

AS Data

AS21527

AS21527 – Daystarr Communications

AS Number	21527
AS Name	DAYSTARR-NET
Organization	Daystarr Communications(dayst-7)
Country	US
Website	daystarr.net
Number of IPv4 Routes	23
Number of IPv6 Routes	2
ASN type	ISP
Registry	ARIN
Date Allocated	2001-05-16

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Use ASN data for AS21527 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
69.41.15.0/24	AS21527	Daystarr Communications	Memorial Healthcare	256
69.41.0.0/24	AS21527	Daystarr Communications	Daystarr Communications	256
69.41.5.0/24	AS21527	Daystarr Communications	Daystarr Communications	256
69.41.12.0/24	AS21527	Daystarr Communications	Daystarr Communications	256
2607:f038::/32	AS21527	Daystarr Communications	Daystarr Communications	~79×10²⁷
208.65.237.0/24	AS21527	Daystarr Communications	Daystarr Communications	256
208.65.236.0/22	AS21527	Daystarr Communications	Daystarr Communications	1024
69.41.9.0/24	AS21527	Daystarr Communications	Daystarr Communications	256
69.41.8.0/24	AS21527	Daystarr Communications	Daystarr Communications	256
69.41.1.0/24	AS21527	Daystarr Communications	Daystarr Communications	256

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:       21527
ASName:         DAYSTARR-NET
ASHandle:       AS21527
RegDate:        2001-05-16
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/21527


OrgName:        Daystarr Communications
OrgId:          DAYST-7
Address:        P.O. Box 698
Address:        307 N Ball St
City:           Owosso
StateProv:      MI
PostalCode:     48867
Country:        US
RegDate:        2004-10-17
Updated:        2022-07-05
Ref:            https://rdap.arin.net/registry/entity/DAYST-7


OrgNOCHandle: DIA5-ARIN
OrgNOCName:   DayStarr IP Admin
OrgNOCPhone:  +1-989-720-6000 
OrgNOCEmail:  noc@daystarrfiber.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/DIA5-ARIN

OrgAbuseHandle: DIA5-ARIN
OrgAbuseName:   DayStarr IP Admin
OrgAbusePhone:  +1-989-720-6000 
OrgAbuseEmail:  noc@daystarrfiber.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DIA5-ARIN

OrgNOCHandle: CR637-ARIN
OrgNOCName:   Rose, Collin 
OrgNOCPhone:  +1-989-720-6000 
OrgNOCEmail:  collin.rose@daystarrfiber.net
OrgNOCRef:    https://rdap.arin.net/registry/entity/CR637-ARIN

OrgAbuseHandle: ABUSE5256-ARIN
OrgAbuseName:   Abuse Handler
OrgAbusePhone:  +1-888-618-3828 
OrgAbuseEmail:  abuse@daystarr.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5256-ARIN

OrgRoutingHandle: DIA5-ARIN
OrgRoutingName:   DayStarr IP Admin
OrgRoutingPhone:  +1-989-720-6000 
OrgRoutingEmail:  noc@daystarrfiber.net
OrgRoutingRef:    https://rdap.arin.net/registry/entity/DIA5-ARIN

OrgTechHandle: CR637-ARIN
OrgTechName:   Rose, Collin 
OrgTechPhone:  +1-989-720-6000 
OrgTechEmail:  collin.rose@daystarrfiber.net
OrgTechRef:    https://rdap.arin.net/registry/entity/CR637-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.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS47018	Covenant Eyes, Inc.	US
AS6939	Hurricane Electric LLC	US
AS46208	Peninsula Fiber Network, LLC	US
AS63133	Lennon Telephone Company	US
AS174	Cogent Communications, LLC	US
AS199524	G-Core Labs S.A.	LU
AS11910	LakeNet LLC	US
AS12129	123.Net, Inc.	US
AS20205	Amplex Electric, Inc.	US
AS30517	Great Lakes Comnet, Inc.	US

Upstreams

AS Number	Description	Country
AS12129	123.Net, Inc.	US
AS30517	Great Lakes Comnet, Inc.	US
AS26554	US Signal Company, L.L.C.	US
AS6939	Hurricane Electric LLC	US
AS46208	Peninsula Fiber Network, LLC	US
AS174	Cogent Communications, LLC	US