[REN-BGP-stats-all] IPv4 R&E Routing Table Report - Guam (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Jul 15 21:24:54 UTC 2025
IPv4 R&E Routing Table Report 21:20 GMT Tue 15 Jul, 2025
IPv4 BGP Table (R&E) as seen at Guam.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/UniGuam/
Analysis Summary
----------------
BGP routing table entries examined: 18376
Prefixes after maximum aggregation (per Origin AS): 9117
Deaggregation factor: 2.02
Unique aggregates announced (without unneeded subnets): 599
Number of IPv4 prefixes with a valid ROA: 8007
Number of IPv4 prefixes with an invalid ROA: 0
Number of IPv4 prefixes with no ROA: 10369
Total ASes present in the Internet Routing Table: 2674
Prefixes per ASN: 6.87
Origin-only ASes present in the Internet Routing Table: 2302
Origin ASes announcing only one prefix: 1016
Transit ASes present in the Internet Routing Table: 372
Transit-only ASes present in the Internet Routing Table: 73
Paths with bogon ASNs present in the IPv4 Routing Table: 62
Average AS path length visible in the Internet Routing Table: 5.7
Max AS path length visible: 20
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 33
Number of instances of unregistered ASNs: 33
Number of 32-bit ASNs allocated by the RIRs: 46832
Number of 32-bit ASNs visible in the Routing Table: 687
Prefixes from 32-bit ASNs in the Routing Table: 1815
Number of bogon 32-bit ASNs visible in the Routing Table: 70
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 1
Number of addresses announced to Internet: 3225400112
Equivalent to 192 /8s, 63 /16s and 179 /24s
Percentage of available address space announced: 87.1
Percentage of allocated address space announced: 87.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 1970
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4091
Total APNIC prefixes after maximum aggregation: 1664
APNIC Deaggregation factor: 2.46
Prefixes being announced from the APNIC address blocks: 4092
Unique aggregates announced from the APNIC address blocks: 6
APNIC Region origin ASes present in the Internet Routing Table: 499
APNIC Prefixes per ASN: 8.20
APNIC Region origin ASes announcing only one prefix: 207
APNIC Region transit ASes present in the Internet Routing Table: 51
Average APNIC Region AS path length visible: 6.3
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 231
Number of APNIC addresses announced to Internet: 590336
Equivalent to 0 /8s, 9 /16s and 2 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-155961
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 8092
Total ARIN prefixes after maximum aggregation: 4725
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 8122
Unique aggregates announced from the ARIN address blocks: 149
ARIN Region origin ASes present in the Internet Routing Table: 1253
ARIN Prefixes per ASN: 6.48
ARIN Region origin ASes announcing only one prefix: 430
ARIN Region transit ASes present in the Internet Routing Table: 160
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 17
Number of ARIN region 32-bit ASNs visible in the Routing Table: 208
Number of ARIN addresses announced to Internet: -2146877776
Equivalent to 128 /8s, 9 /16s and 62 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-402332
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8,
67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8,
74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8,
100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8,
131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8,
139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8,
148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8,
159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8,
167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8,
184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8,
207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 3627
Total RIPE prefixes after maximum aggregation: 2081
RIPE Deaggregation factor: 1.74
Prefixes being announced from the RIPE address blocks: 3629
Unique aggregates announced from the RIPE address blocks: 442
RIPE Region origin ASes present in the Internet Routing Table: 660
RIPE Prefixes per ASN: 5.50
RIPE Region origin ASes announcing only one prefix: 292
RIPE Region transit ASes present in the Internet Routing Table: 107
Average RIPE Region AS path length visible: 5.7
Max RIPE Region AS path length visible: 16
Number of RIPE region 32-bit ASNs visible in the Routing Table: 154
Number of RIPE addresses announced to Internet: 2976384
Equivalent to 0 /8s, 45 /16s and 106 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8,
81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8,
88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8,
95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8,
185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8,
217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 1381
Total LACNIC prefixes after maximum aggregation: 484
LACNIC Deaggregation factor: 2.85
Prefixes being announced from the LACNIC address blocks: 1381
Unique aggregates announced from the LACNIC address blocks: 0
LACNIC Region origin ASes present in the Internet Routing Table: 135
LACNIC Prefixes per ASN: 10.23
LACNIC Region origin ASes announcing only one prefix: 58
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 5.9
Max LACNIC Region AS path length visible: 15
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62
Number of LACNIC addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1152
Total AfriNIC prefixes after maximum aggregation: 151
AfriNIC Deaggregation factor: 7.63
Prefixes being announced from the AfriNIC address blocks: 1151
Unique aggregates announced from the AfriNIC address blocks: 2
AfriNIC Region origin ASes present in the Internet Routing Table: 52
AfriNIC Prefixes per ASN: 22.13
AfriNIC Region origin ASes announcing only one prefix: 29
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 5.9
Max AfriNIC Region AS path length visible: 20
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 32
Number of AfriNIC addresses announced to Internet: 1073743872
Equivalent to 64 /8s, 0 /16s and 8 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7497 453 98 29 CSTNET-AS-AP Computer Network Information
1237 195 262194 173 KREONET-AS-KR KISTI, KR
4538 193 789723 50 ERX-CERNET-BKB China Education and Resea
7575 189 262159 87 AARNET-AS-AP Australian Academic and Res
55824 148 524306 12 NKN-CORE-NW NKN Core Network, IN
10079 145 16 1 UNIWESTSYD-AS-AP University of Western Sy
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 67 262178 14 UNINET-AS-AP UNINET-, TH
24313 67 16 1 NSW-DET-AS NSW Department of Education, A
6262 63 524384 13 CSIRO Commonwealth Scientific and Indust
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
668 212 786718 104 DNIC-AS-00668, US
376 199 154 162 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
2920 176 34 7 LACOE, US
2152 149 524557 63 CENIC-2152, US
18558 139 18 4 NETBLK-RCOEK, US
81 129 524806 34 NCREN, US
1 128 524289 50 LVLT-1, US
270 118 312 85 AS270, US
23024 99 524292 18 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 140 36 DFN Verein zur Foerderung eines Deutschen
786 193 786924 45 JANET Jisc Services Limited, GB
559 114 262649 34 SWITCH Peering requests: peering at switch.
8895 109 262168 5 ISU Internet Services Unit ISU, SA
1103 99 787339 51 SURFNET-NL SURFnet, The Netherlands, NL
2614 92 262164 18 ROEDUNET, RO
137 82 262738 38 ASGARR Consortium GARR, IT
3267 81 262166 42 NIKS, RU
1930 79 262165 5 RCCN Fundacao para a Ciencia e a Tecnolo
553 75 524641 75 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 325 524445 56 Rede Nacional de Ensino e Pesquisa, BR
28391 159 262149 31 Universidad Juarez Autonoma de Tabasco,
11340 110 262146 8 Red Universitaria Nacional, CL
271640 68 262144 68 UNIVERSIDADE FEDERAL DE VICOSA, BR
2715 55 262244 37 Fundacao Carlos Chagas Filho de Amparo a
61468 52 262145 5 CEDIA, EC
19611 48 16 13 Associacao Antonio Vieira - Unisinos, BR
3596 40 262150 3 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 524316 27 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 569 82 3 KENET-AS, KE
2018 375 262448 71 TENET-1, ZA
8094 47 262150 4 PUKNET, ZA
37215 37 8 1 MAREN, MW
30983 12 524288 5 MARWAN-AS, MA
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
36982 8 262160 3 UCT, ZA
327947 7 4 1 KNUST-, GH
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 569 82 3 KENET-AS, KE
7497 453 98 29 CSTNET-AS-AP Computer Network Information
2018 375 262448 71 TENET-1, ZA
1916 325 524445 56 Rede Nacional de Ensino e Pesquisa, BR
680 284 140 36 DFN Verein zur Foerderung eines Deutschen
668 212 786718 104 DNIC-AS-00668, US
376 199 154 162 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
1237 195 262194 173 KREONET-AS-KR KISTI, KR
786 193 786924 45 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
7497 453 424 CSTNET-AS-AP Computer Network Information Cente
2018 375 304 TENET-1, ZA
1916 325 269 Rede Nacional de Ensino e Pesquisa, BR
680 284 248 DFN Verein zur Foerderung eines Deutschen Forsc
5786 199 198 UPRENET, PR
2920 176 169 LACOE, US
786 193 148 JANET Jisc Services Limited, GB
10079 145 144 UNIWESTSYD-AS-AP University of Western Sydney,
4538 193 143 ERX-CERNET-BKB China Education and Research Net
55824 148 136 NKN-CORE-NW NKN Core Network, IN
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
26898 UNALLOCATED 131.187.248.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.248.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.249.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.250.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.251.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 198.30.187.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/20 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.81.0/24 3112 OARNET-AS-1, US
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/2 Origin: 37661 NRaE1-AS, NG
164.160.192.0/2 Transit: 37288 WACREN, SN
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:374 /2:4581 /3:3 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:1 /12:11
/13:18 /14:31 /15:114 /16:1799 /17:272 /18:315
/19:393 /20:574 /21:573 /22:916 /23:981 /24:7176
/25:39 /26:58 /27:86 /28:8 /29:48 /30:2
/31:0 /32:1
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 382 569 KENET-AS, KE
8895 63 109 ISU Internet Services Unit ISU, SA
1916 61 325 Rede Nacional de Ensino e Pesquisa, BR
3267 36 81 NIKS, RU
23024 34 99 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
37215 31 37 MAREN, MW
25977 30 44 HCCS, US
1 29 128 LVLT-1, US
Complete listing at https://bgp.nsrc.org/REN/UniGuam/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 4:2 5:16 6:4 8:2 12:2
14:94 23:14 24:7 31:1 35:8 37:14
38:11 40:1 41:225 42:18 44:4 45:50
46:6 47:1 49:12 50:3 52:1 58:15
59:20 60:6 61:3 62:8 63:32 64:44
65:5 66:43 67:41 68:20 69:19 70:2
71:1 72:8 74:52 76:16 77:9 78:3
79:9 80:13 81:27 82:6 83:8 84:9
85:51 86:7 87:1 88:1 89:11 91:40
92:2 93:15 94:2 95:2 96:5 97:1
98:2 101:3 102:2 103:213 104:40 108:10
111:16 113:1 114:21 116:8 117:61 118:1
119:31 121:24 123:8 124:42 125:5 128:53
129:21 130:52 131:38 132:27 134:96 136:87
137:100 138:17 139:6 140:14 141:2 142:20
143:15 144:23 146:126 147:27 148:88 149:8
150:21 151:7 152:138 153:14 154:40 155:58
156:127 157:23 158:18 159:44 160:3 161:7
162:24 163:32 164:5 165:6 166:1 167:7
168:44 169:3 170:14 171:1 173:6 175:11
176:1 177:5 178:3 179:11 180:16 182:11
185:33 186:3 187:20 188:13 190:16 191:14
192:1033 193:203 194:99 195:25 196:146 197:189
198:263 199:172 200:195 201:35 202:423 203:246
204:203 205:65 206:123 207:128 208:37 209:102
210:152 211:3 212:70 213:3 214:10 216:51
217:4 218:3 220:13 222:1 223:16
End of report
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