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	Prefix	Description
	192.247.24.0/24	TETRA TECH, INC.
	192.247.26.0/24	TETRA TECH, INC.
	192.247.27.0/24	TETRA TECH, INC.
	192.247.28.0/24	TETRA TECH, INC.
	192.247.29.0/24	TETRA TECH GROUP LIMITED
	192.247.30.0/24	TETRA TECH, INC.
	192.247.31.0/24	TETRA TECH, INC.
	198.163.178.0/24	TETRA TECH, INC.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS701	Verizon Business	✔	✘
	AS1221	Telstra Limited	✔	✘
	AS8220	COLT	✔	✘
	AS702	Verizon Business - EMEA	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS701	Verizon Business	✔	✘
	AS8220	COLT	✔	✘
	AS1221	Telstra Limited	✔	✘
	AS702	Verizon Business - EMEA	✔	✘

ASHandle:       AS64204
OrgID:          TETRA-15
ASName:         TTEK-12
ASNumber:       64204
RegDate:        2015-09-01
Updated:        2019-03-21
TechHandle:     JSH254-ARIN
TechHandle:     LOMBA72-ARIN
TechHandle:     PURRI-ARIN
TechHandle:     ROYYV-ARIN
AbuseHandle:    JSH254-ARIN
AbuseHandle:    LOMBA72-ARIN
AbuseHandle:    PURRI-ARIN
AbuseHandle:    ROYYV-ARIN
NOCHandle:      JSH254-ARIN
NOCHandle:      LOMBA72-ARIN
NOCHandle:      PURRI-ARIN
NOCHandle:      ROYYV-ARIN
Source:         ARIN



OrgID:          TETRA-15
OrgName:        TETRA TECH, INC.
CanAllocate:    
Street:         3475 E FOOTHILL BLVD.
City:           PASADENA
State/Prov:     CA
Country:        US
PostalCode:     91107
RegDate:        2009-01-21
Updated:        2021-04-06
OrgAdminHandle: HELMD8-ARIN
OrgTechHandle:  LOMBA72-ARIN
OrgTechHandle:  MOORH10-ARIN
OrgTechHandle:  PURRI-ARIN
OrgTechHandle:  ROYYV-ARIN
OrgAbuseHandle: LEVIN193-ARIN
OrgAbuseHandle: LOMBA72-ARIN
OrgAbuseHandle: MOORH10-ARIN
OrgAbuseHandle: PURRI-ARIN
OrgAbuseHandle: ROYYV-ARIN
OrgNOCHandle:   LOMBA72-ARIN
OrgNOCHandle:   MOORH10-ARIN
OrgNOCHandle:   PURRI-ARIN
OrgNOCHandle:   ROYYV-ARIN
OrgRoutingHandle:   LOMBA72-ARIN
OrgDNSHandle:   KOBAY18-ARIN
OrgDNSHandle:   MOORH10-ARIN
Source:         ARIN





OrgAdminHandle:       HELMD8-ARIN
OrgAdminName:         Dawn Helm
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        LOMBA72-ARIN
OrgTechName:          Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        MOORH10-ARIN
OrgTechName:          Chris Moorhead
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        PURRI-ARIN
OrgTechName:          William Purrier
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ROYYV-ARIN
OrgTechName:          Yves Roy
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       LEVIN193-ARIN
OrgAbuseName:         Darrious Levine
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       LOMBA72-ARIN
OrgAbuseName:         Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       MOORH10-ARIN
OrgAbuseName:         Chris Moorhead
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       PURRI-ARIN
OrgAbuseName:         William Purrier
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ROYYV-ARIN
OrgAbuseName:         Yves Roy
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         LOMBA72-ARIN
OrgNOCName:           Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         MOORH10-ARIN
OrgNOCName:           Chris Moorhead
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         PURRI-ARIN
OrgNOCName:           William Purrier
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         ROYYV-ARIN
OrgNOCName:           Yves Roy
# Email removed, Log into bgp.tools to see whois emails


OrgRoutingHandle:     LOMBA72-ARIN
OrgRoutingName:       Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         KOBAY18-ARIN
OrgDNSName:           Sean Kobayashi
# Email removed, Log into bgp.tools to see whois emails


OrgDNSHandle:         MOORH10-ARIN
OrgDNSName:           Chris Moorhead
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           JSH254-ARIN
TechName:             JOE SHEN
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           LOMBA72-ARIN
TechName:             Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           PURRI-ARIN
TechName:             William Purrier
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           ROYYV-ARIN
TechName:             Yves Roy
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          JSH254-ARIN
AbuseName:            JOE SHEN
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          LOMBA72-ARIN
AbuseName:            Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          PURRI-ARIN
AbuseName:            William Purrier
# Email removed, Log into bgp.tools to see whois emails


AbuseHandle:          ROYYV-ARIN
AbuseName:            Yves Roy
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            JSH254-ARIN
NOCName:              JOE SHEN
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            LOMBA72-ARIN
NOCName:              Michael Lombardi
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            PURRI-ARIN
NOCName:              William Purrier
# Email removed, Log into bgp.tools to see whois emails


NOCHandle:            ROYYV-ARIN
NOCName:              Yves Roy
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-14T03:28:01Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-lumen-customers-asns	10695
RADB	as-mvnet-id	81
APNIC	as1221:as-customers	4780
RADB	as-telstra-intl-customers	12432
RADB	as-frontier	5
RIPE	as8220:as-coltuk	753
RADB	as-kddcustomer2	8206
RADB	as-orn-cust	33