[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 Apr 1 22:35:50 UTC 2025
IPv4 R&E Routing Table Report 22:35 GMT Tue 01 Apr, 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: 32090
Prefixes after maximum aggregation (per Origin AS): 15577
Deaggregation factor: 2.06
Unique aggregates announced (without unneeded subnets): 18525
Total ASes present in the Internet Routing Table: 2857
Prefixes per ASN: 11.23
Origin-only ASes present in the Internet Routing Table: 2486
Origin ASes announcing only one prefix: 1088
Transit ASes present in the Internet Routing Table: 371
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: 21
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 4
Number of instances of unregistered ASNs: 4
Number of 32-bit ASNs allocated by the RIRs: 46115
Number of 32-bit ASNs visible in the Routing Table: 720
Prefixes from 32-bit ASNs in the Routing Table: 5023
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: 10
Number of addresses announced to Internet: 345139712
Equivalent to 20 /8s, 146 /16s and 106 /24s
Percentage of available address space announced: 9.3
Percentage of allocated address space announced: 9.3
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: 4183
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4918
Total APNIC prefixes after maximum aggregation: 2337
APNIC Deaggregation factor: 2.10
Prefixes being announced from the APNIC address blocks: 5148
Unique aggregates announced from the APNIC address blocks: 2912
APNIC Region origin ASes present in the Internet Routing Table: 604
APNIC Prefixes per ASN: 8.52
APNIC Region origin ASes announcing only one prefix: 249
APNIC Region transit ASes present in the Internet Routing Table: 52
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 245
Number of APNIC addresses announced to Internet: 47365120
Equivalent to 2 /8s, 210 /16s and 188 /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: 21318
Total ARIN prefixes after maximum aggregation: 9721
ARIN Deaggregation factor: 2.19
Prefixes being announced from the ARIN address blocks: 20493
Unique aggregates announced from the ARIN address blocks: 11243
ARIN Region origin ASes present in the Internet Routing Table: 1362
ARIN Prefixes per ASN: 15.05
ARIN Region origin ASes announcing only one prefix: 473
ARIN Region transit ASes present in the Internet Routing Table: 170
Average ARIN Region AS path length visible: 2.9
Max ARIN Region AS path length visible: 17
Number of ARIN region 32-bit ASNs visible in the Routing Table: 239
Number of ARIN addresses announced to Internet: 209485312
Equivalent to 12 /8s, 124 /16s and 126 /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: 3714
Total RIPE prefixes after maximum aggregation: 2957
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 4290
Unique aggregates announced from the RIPE address blocks: 3633
RIPE Region origin ASes present in the Internet Routing Table: 659
RIPE Prefixes per ASN: 6.51
RIPE Region origin ASes announcing only one prefix: 285
RIPE Region transit ASes present in the Internet Routing Table: 104
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 15
Number of RIPE region 32-bit ASNs visible in the Routing Table: 153
Number of RIPE addresses announced to Internet: 81498880
Equivalent to 4 /8s, 219 /16s and 147 /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: 1081
Total LACNIC prefixes after maximum aggregation: 384
LACNIC Deaggregation factor: 2.82
Prefixes being announced from the LACNIC address blocks: 1087
Unique aggregates announced from the LACNIC address blocks: 495
LACNIC Region origin ASes present in the Internet Routing Table: 122
LACNIC Prefixes per ASN: 8.91
LACNIC Region origin ASes announcing only one prefix: 51
LACNIC Region transit ASes present in the Internet Routing Table: 19
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 10
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 54
Number of LACNIC addresses announced to Internet: 4239616
Equivalent to 0 /8s, 64 /16s and 177 /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: 1055
Total AfriNIC prefixes after maximum aggregation: 174
AfriNIC Deaggregation factor: 6.06
Prefixes being announced from the AfriNIC address blocks: 1062
Unique aggregates announced from the AfriNIC address blocks: 232
AfriNIC Region origin ASes present in the Internet Routing Table: 51
AfriNIC Prefixes per ASN: 20.82
AfriNIC Region origin ASes announcing only one prefix: 30
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 21
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 29
Number of AfriNIC addresses announced to Internet: 2546176
Equivalent to 0 /8s, 38 /16s and 218 /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 624 2170 464 SINET-AS Research Organization of Informa
7497 452 180 24 CSTNET-AS-AP Computer Network Information
4538 195 4192 73 ERX-CERNET-BKB China Education and Resear
1237 194 74 146 KREONET-AS-KR KISTI, KR
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 297 117 AARNET-AS-AP Australian Academic and Rese
55824 147 19 21 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 66 37 9 UNINET-AS-AP UNINET-, TH
1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA
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 5087 4937 2406 AMAZON-02, US
396982 2947 3649 464 GOOGLE-CLOUD-PLATFORM, US
714 1155 4392 5 APPLE-ENGINEERING, US
14618 1035 4446 795 AMAZON-AES, US
15169 956 2012 73 GOOGLE, US
8075 738 16019 620 MICROSOFT-CORP-MSN-AS-BLOCK, US
2152 532 507 99 CENIC-2152, US
2920 225 44 49 LACOE, US
668 212 647 180 DNIC-AS-00668, US
376 201 162 151 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 249 DFN Verein zur Foerderung eines Deutschen
786 196 1750 188 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 108 24 5 ISU Internet Services Unit ISU, SA
1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL
8987 91 244 66 AMAZON EXPANSION, IE
2614 89 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
3267 79 29 69 NIKS, RU
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 236 178 41 Rede Nacional de Ensino e Pesquisa, BR
11340 110 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
2715 52 100 36 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
21612 29 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR
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 457 82 3 KENET-AS, KE
2018 374 318 69 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 13 8 5 NRaE1-AS, NG
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
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 5087 4937 2406 AMAZON-02, US
396982 2947 3649 464 GOOGLE-CLOUD-PLATFORM, US
714 1155 4392 5 APPLE-ENGINEERING, US
14618 1035 4446 795 AMAZON-AES, US
15169 956 2012 73 GOOGLE, US
8075 738 16019 620 MICROSOFT-CORP-MSN-AS-BLOCK, US
2907 624 2170 464 SINET-AS Research Organization of Informa
2152 532 507 99 CENIC-2152, US
36914 457 82 3 KENET-AS, KE
7497 452 180 24 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 2947 2483 GOOGLE-CLOUD-PLATFORM, US
714 1155 1150 APPLE-ENGINEERING, US
15169 956 883 GOOGLE, US
36914 457 454 KENET-AS, KE
2152 532 433 CENIC-2152, US
7497 452 428 CSTNET-AS-AP Computer Network Information Cente
2018 374 305 TENET-1, ZA
14618 1035 240 AMAZON-AES, US
5786 199 198 UPRENET, PR
1916 236 195 Rede Nacional de Ensino e Pesquisa, BR
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
65208 PRIVATE 206.206.156.0/22 11570 AS11570, US
65208 PRIVATE 216.161.32.0/23 11570 AS11570, US
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 101 WASH-NSF-AS, US
103.165.160.0/24 Origin: 16509 AMAZON-02, US
103.165.160.0/24 Transit: 101 WASH-NSF-AS, 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
192.225.212.0/24 Origin: 14618 AMAZON-AES, US
192.225.212.0/24 Transit: 16509 AMAZON-02, 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 /14:117 /15:234 /16:2420 /17:614 /18:601
/19:868 /20:3038 /21:1550 /22:2259 /23:2469 /24:17811
/25:0 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
16509 834 5087 AMAZON-02, US
36914 444 457 KENET-AS, KE
14618 325 1035 AMAZON-AES, US
396982 273 2947 GOOGLE-CLOUD-PLATFORM, US
15169 269 956 GOOGLE, US
8075 136 738 MICROSOFT-CORP-MSN-AS-BLOCK, US
8895 105 108 ISU Internet Services Unit ISU, SA
2152 60 532 CENIC-2152, US
23024 38 99 OCDE, US
3267 35 79 NIKS, RU
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 2:1 3:276 4:2 5:27 6:4
8:28 12:2 13:160 14:93 15:138 16:132
17:309 18:323 23:129 24:3 31:6 34:24
35:100 36:1 37:9 38:11 40:6 41:151
42:18 43:2 44:4 45:87 46:13 47:1
49:8 50:13 52:851 54:178 57:14 58:16
59:20 60:6 61:3 62:16 63:46 64:184
65:44 66:123 67:77 68:25 69:71 70:34
71:30 72:22 74:165 75:1 76:43 77:12
78:3 79:10 80:14 81:25 82:7 83:9
84:9 85:58 86:6 87:6 88:1 89:23
91:59 92:9 93:46 94:8 95:2 96:7
97:1 98:15 99:75 101:4 102:15 103:434
104:275 107:42 108:170 109:8 111:22 113:5
114:32 115:1 116:14 117:68 118:34 119:30
121:29 122:11 123:8 124:42 125:5 128:59
129:47 130:173 131:80 132:65 133:157 134:113
135:9 136:314 137:125 138:71 139:27 140:49
141:18 142:334 143:41 144:70 145:9 146:141
147:82 148:53 149:18 150:77 151:54 152:153
153:15 154:47 155:133 156:134 157:41 158:43
159:166 160:40 161:55 162:115 163:77 164:31
165:84 166:5 167:40 168:170 169:14 170:149
171:1 172:135 173:126 174:2 175:16 176:6
177:7 178:3 179:13 180:16 181:1 182:12
184:10 185:154 186:3 187:24 188:20 189:3
190:17 191:13 192:1728 193:331 194:143 195:89
196:149 197:330 198:654 199:411 200:289 201:38
202:663 203:470 204:466 205:223 206:255 207:361
208:174 209:277 210:225 211:4 212:158 213:22
214:10 216:263 217:26 218:23 219:6 220:17
222:4 223:15
End of report
More information about the ren-bgp-stats-all
mailing list