[REN-BGP-stats-all] IPv4 R&E Routing Table Report - RouteViews PacWave (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Jul 15 22:35:38 UTC 2025
IPv4 R&E Routing Table Report 22:35 GMT Tue 15 Jul, 2025
IPv4 BGP Table (R&E) as seen at RouteViews PacWave.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/PacWave/
Analysis Summary
----------------
BGP routing table entries examined: 32700
Prefixes after maximum aggregation (per Origin AS): 16419
Deaggregation factor: 1.99
Unique aggregates announced (without unneeded subnets): 19019
Total ASes present in the Internet Routing Table: 2887
Prefixes per ASN: 11.33
Origin-only ASes present in the Internet Routing Table: 2512
Origin ASes announcing only one prefix: 1110
Transit ASes present in the Internet Routing Table: 375
Transit-only ASes present in the Internet Routing Table: 57
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.5
Max AS path length visible: 19
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 36
Number of instances of unregistered ASNs: 36
Number of 32-bit ASNs allocated by the RIRs: 46832
Number of 32-bit ASNs visible in the Routing Table: 742
Prefixes from 32-bit ASNs in the Routing Table: 5322
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 347673344
Equivalent to 20 /8s, 185 /16s and 19 /24s
Percentage of available address space announced: 9.4
Percentage of allocated address space announced: 9.4
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: 4313
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4871
Total APNIC prefixes after maximum aggregation: 2363
APNIC Deaggregation factor: 2.06
Prefixes being announced from the APNIC address blocks: 5130
Unique aggregates announced from the APNIC address blocks: 2957
APNIC Region origin ASes present in the Internet Routing Table: 606
APNIC Prefixes per ASN: 8.47
APNIC Region origin ASes announcing only one prefix: 255
APNIC Region transit ASes present in the Internet Routing Table: 54
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 250
Number of APNIC addresses announced to Internet: 47167232
Equivalent to 2 /8s, 207 /16s and 183 /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: 21639
Total ARIN prefixes after maximum aggregation: 10428
ARIN Deaggregation factor: 2.08
Prefixes being announced from the ARIN address blocks: 20767
Unique aggregates announced from the ARIN address blocks: 11478
ARIN Region origin ASes present in the Internet Routing Table: 1368
ARIN Prefixes per ASN: 15.18
ARIN Region origin ASes announcing only one prefix: 473
ARIN Region transit ASes present in the Internet Routing Table: 168
Average ARIN Region AS path length visible: 2.9
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 241
Number of ARIN addresses announced to Internet: 211732480
Equivalent to 12 /8s, 158 /16s and 200 /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: 3722
Total RIPE prefixes after maximum aggregation: 2960
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 4346
Unique aggregates announced from the RIPE address blocks: 3676
RIPE Region origin ASes present in the Internet Routing Table: 667
RIPE Prefixes per ASN: 6.52
RIPE Region origin ASes announcing only one prefix: 296
RIPE Region transit ASes present in the Internet Routing Table: 106
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 15
Number of RIPE region 32-bit ASNs visible in the Routing Table: 157
Number of RIPE addresses announced to Internet: 81584384
Equivalent to 4 /8s, 220 /16s and 225 /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: 1291
Total LACNIC prefixes after maximum aggregation: 495
LACNIC Deaggregation factor: 2.61
Prefixes being announced from the LACNIC address blocks: 1298
Unique aggregates announced from the LACNIC address blocks: 688
LACNIC Region origin ASes present in the Internet Routing Table: 134
LACNIC Prefixes per ASN: 9.69
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 12
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62
Number of LACNIC addresses announced to Internet: 4603136
Equivalent to 0 /8s, 70 /16s and 61 /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: 1141
Total AfriNIC prefixes after maximum aggregation: 165
AfriNIC Deaggregation factor: 6.92
Prefixes being announced from the AfriNIC address blocks: 1148
Unique aggregates announced from the AfriNIC address blocks: 209
AfriNIC Region origin ASes present in the Internet Routing Table: 52
AfriNIC Prefixes per ASN: 22.08
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: 4.9
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 32
Number of AfriNIC addresses announced to Internet: 2581248
Equivalent to 0 /8s, 39 /16s and 99 /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
2907 601 2169 462 SINET-AS Research Organization of Informa
7497 451 180 23 CSTNET-AS-AP Computer Network Information
1237 194 74 146 KREONET-AS-KR KISTI, KR
4538 193 4192 72 ERX-CERNET-BKB China Education and Resear
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 281 116 AARNET-AS-AP Australian Academic and Rese
55824 148 19 21 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 67 37 9 UNINET-AS-AP UNINET-, TH
6262 63 134 56 CSIRO Commonwealth Scientific and Industr
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 5230 5000 3042 AMAZON-02, US
396982 3194 3854 430 GOOGLE-CLOUD-PLATFORM, US
714 1200 4392 5 APPLE-ENGINEERING, US
14618 1098 4461 844 AMAZON-AES, US
8075 790 16023 663 MICROSOFT-CORP-MSN-AS-BLOCK, US
15169 790 189 48 GOOGLE, US
2152 573 491 98 CENIC-2152, US
2920 229 44 49 LACOE, US
668 211 648 180 DNIC-AS-00668, US
376 199 162 150 RISQ-AS, CA
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 250 DFN Verein zur Foerderung eines Deutschen
786 193 1742 187 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 109 24 5 ISU Internet Services Unit ISU, SA
1103 99 1759 85 SURFNET-NL SURFnet, The Netherlands, NL
8987 93 260 67 AWS-GOVCLOUD AWS-GOVCLOUD, IE
2614 92 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
3267 80 29 69 NIKS, RU
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 240 177 41 Rede Nacional de Ensino e Pesquisa, BR
28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 52 Red Universitaria Nacional, CL
271640 68 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
2715 55 100 37 Fundacao Carlos Chagas Filho de Amparo a
61468 52 3 21 CEDIA, EC
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
3596 37 8 4 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 566 82 3 KENET-AS, KE
2018 375 318 69 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 37 8 1 MAREN, MW
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
36982 8 33 8 UCT, ZA
327947 7 4 1 KNUST-, GH
30983 4 4 1 MARWAN-AS, MA
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 5230 5000 3042 AMAZON-02, US
396982 3194 3854 430 GOOGLE-CLOUD-PLATFORM, US
714 1200 4392 5 APPLE-ENGINEERING, US
14618 1098 4461 844 AMAZON-AES, US
8075 790 16023 663 MICROSOFT-CORP-MSN-AS-BLOCK, US
15169 790 189 48 GOOGLE, US
2907 601 2169 462 SINET-AS Research Organization of Informa
2152 573 491 98 CENIC-2152, US
36914 566 82 3 KENET-AS, KE
7497 451 180 23 CSTNET-AS-AP Computer Network Information
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
396982 3194 2764 GOOGLE-CLOUD-PLATFORM, US
714 1200 1195 APPLE-ENGINEERING, US
15169 790 742 GOOGLE, US
36914 566 563 KENET-AS, KE
2152 573 475 CENIC-2152, US
7497 451 428 CSTNET-AS-AP Computer Network Information Cente
2018 375 306 TENET-1, ZA
14618 1098 254 AMAZON-AES, US
1916 240 199 Rede Nacional de Ensino e Pesquisa, BR
5786 199 198 UPRENET, PR
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65208 PRIVATE 63.225.1.0/24 11570 AS11570, US
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
26898 UNALLOCATED 131.187.248.0/22 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.248.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.249.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.250.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.251.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 198.30.187.0/24 3112 OARNET-AS-1, US
65208 PRIVATE 206.206.156.0/22 11570 AS11570, US
26898 UNALLOCATED 208.108.80.0/20 3112 OARNET-AS-1, US
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.190.237.0/24 Origin: 16509 AMAZON-02, US
64.190.237.0/24 Transit: 101 WASH-NSF-AS, US
67.158.57.0/24 Origin: 14618 AMAZON-AES, US
67.158.57.0/24 Transit: 16509 AMAZON-02, US
103.177.50.0/23 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US
103.177.50.0/23 Transit: 15169 GOOGLE, US
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
185.131.202.0/24 Origin: 396982 GOOGLE-CLOUD-PLATFORM, US
185.131.202.0/24 Transit: 15169 GOOGLE, US
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:1 /9:3 /10:3 /11:11 /12:38
/13:53 /14:121 /15:239 /16:2420 /17:629 /18:622
/19:892 /20:3084 /21:1511 /22:2219 /23:2539 /24:18314
/25:0 /26:0 /27:0 /28:1 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
16509 832 5230 AMAZON-02, US
36914 542 566 KENET-AS, KE
14618 342 1098 AMAZON-AES, US
396982 289 3194 GOOGLE-CLOUD-PLATFORM, US
15169 271 790 GOOGLE, US
8075 151 790 MICROSOFT-CORP-MSN-AS-BLOCK, US
8895 106 109 ISU Internet Services Unit ISU, SA
2152 66 573 CENIC-2152, US
23024 38 99 OCDE, US
3267 35 80 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:10 2:2 3:360 4:2 5:26 6:4
8:28 12:2 13:190 14:93 15:140 16:132
17:333 18:324 20:17 23:131 24:3 31:6
34:24 35:118 36:1 37:16 38:12 40:7
41:224 42:18 43:2 44:5 45:92 46:14
47:1 49:12 50:15 52:847 54:184 57:12
58:16 59:20 60:6 61:3 62:16 63:46
64:190 65:49 66:131 67:79 68:27 69:78
70:29 71:21 72:23 74:164 75:1 76:24
77:11 78:3 79:13 80:14 81:28 82:6
83:9 84:8 85:58 86:7 87:5 88:2
89:24 91:59 92:9 93:47 94:9 95:2
96:7 97:2 98:15 99:81 101:3 102:15
103:434 104:269 107:42 108:170 109:11 111:22
113:6 114:29 115:1 116:13 117:68 118:34
119:31 121:29 122:11 123:8 124:42 125:5
128:62 129:50 130:169 131:88 132:68 133:156
134:118 135:10 136:313 137:130 138:24 139:23
140:47 141:19 142:336 143:43 144:66 145:12
146:140 147:75 148:213 149:17 150:47 151:53
152:157 153:16 154:40 155:137 156:133 157:45
158:40 159:191 160:40 161:51 162:115 163:91
164:29 165:83 166:5 167:56 168:164 169:15
170:147 171:1 172:143 173:133 174:2 175:16
176:6 177:5 178:3 179:14 180:16 181:1
182:12 184:10 185:162 186:4 187:25 188:22
190:17 191:13 192:1768 193:332 194:145 195:68
196:148 197:350 198:655 199:419 200:307 201:40
202:661 203:458 204:465 205:225 206:257 207:374
208:177 209:287 210:222 211:3 212:163 213:23
214:10 216:232 217:28 218:23 219:7 220:16
222:4 223:16
End of report
More information about the ren-bgp-stats-all
mailing list