[REN-BGP-stats-all] IPv4 R&E Routing Table Report - RouteViews PacWave (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Feb 19 22:35:54 UTC 2025
IPv4 R&E Routing Table Report 22:35 GMT Wed 19 Feb, 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: 32371
Prefixes after maximum aggregation (per Origin AS): 15596
Deaggregation factor: 2.08
Unique aggregates announced (without unneeded subnets): 18665
Total ASes present in the Internet Routing Table: 2853
Prefixes per ASN: 11.35
Origin-only ASes present in the Internet Routing Table: 2481
Origin ASes announcing only one prefix: 1101
Transit ASes present in the Internet Routing Table: 372
Transit-only ASes present in the Internet Routing Table: 59
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: 20
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: 46145
Number of 32-bit ASNs visible in the Routing Table: 689
Prefixes from 32-bit ASNs in the Routing Table: 4901
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: 345158144
Equivalent to 20 /8s, 146 /16s and 178 /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: 4322
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4738
Total APNIC prefixes after maximum aggregation: 2293
APNIC Deaggregation factor: 2.07
Prefixes being announced from the APNIC address blocks: 4961
Unique aggregates announced from the APNIC address blocks: 2886
APNIC Region origin ASes present in the Internet Routing Table: 575
APNIC Prefixes per ASN: 8.63
APNIC Region origin ASes announcing only one prefix: 245
APNIC Region transit ASes present in the Internet Routing Table: 57
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 216
Number of APNIC addresses announced to Internet: 47335680
Equivalent to 2 /8s, 210 /16s and 73 /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: 21275
Total ARIN prefixes after maximum aggregation: 9649
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 20468
Unique aggregates announced from the ARIN address blocks: 11211
ARIN Region origin ASes present in the Internet Routing Table: 1347
ARIN Prefixes per ASN: 15.20
ARIN Region origin ASes announcing only one prefix: 476
ARIN Region transit ASes present in the Internet Routing Table: 167
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: 226
Number of ARIN addresses announced to Internet: 208875776
Equivalent to 12 /8s, 115 /16s and 49 /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: 3684
Total RIPE prefixes after maximum aggregation: 2936
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 4249
Unique aggregates announced from the RIPE address blocks: 3610
RIPE Region origin ASes present in the Internet Routing Table: 661
RIPE Prefixes per ASN: 6.43
RIPE Region origin ASes announcing only one prefix: 295
RIPE Region transit ASes present in the Internet Routing Table: 103
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 153
Number of RIPE addresses announced to Internet: 81575936
Equivalent to 4 /8s, 220 /16s and 192 /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: 1478
Total LACNIC prefixes after maximum aggregation: 539
LACNIC Deaggregation factor: 2.74
Prefixes being announced from the LACNIC address blocks: 1484
Unique aggregates announced from the LACNIC address blocks: 716
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 9.51
LACNIC Region origin ASes announcing only one prefix: 54
LACNIC Region transit ASes present in the Internet Routing Table: 22
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64
Number of LACNIC addresses announced to Internet: 4727296
Equivalent to 0 /8s, 72 /16s and 34 /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: 1192
Total AfriNIC prefixes after maximum aggregation: 175
AfriNIC Deaggregation factor: 6.81
Prefixes being announced from the AfriNIC address blocks: 1199
Unique aggregates announced from the AfriNIC address blocks: 232
AfriNIC Region origin ASes present in the Internet Routing Table: 53
AfriNIC Prefixes per ASN: 22.62
AfriNIC Region origin ASes announcing only one prefix: 31
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 20
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2638848
Equivalent to 0 /8s, 40 /16s and 68 /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 623 2170 464 SINET-AS Research Organization of Informa
7497 451 180 24 CSTNET-AS-AP Computer Network Information
1237 192 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
4538 140 4192 71 ERX-CERNET-BKB China Education and Resear
4621 69 37 10 UNINET-AS-AP UNINET-, TH
4762 64 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
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 5136 4918 2417 AMAZON-02, US
396982 2927 3659 447 GOOGLE-CLOUD-PLATFORM, US
714 1152 4392 5 APPLE-ENGINEERING, US
14618 1014 4445 774 AMAZON-AES, US
15169 953 2012 73 GOOGLE, US
8075 720 16017 608 MICROSOFT-CORP-MSN-AS-BLOCK, US
2152 532 507 99 CENIC-2152, US
2920 226 44 49 LACOE, US
668 212 648 179 DNIC-AS-00668, US
376 202 162 151 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
786 195 1755 184 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 110 24 5 ISU Internet Services Unit ISU, SA
1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL
2614 94 26 73 ROEDUNET, RO
8987 87 243 63 AMAZON EXPANSION, IE
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
3267 78 29 68 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 237 178 42 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 53 16 1 Red de Interconexion Universitaria, AR
61468 52 5 17 CEDIA, EC
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
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
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 557 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37182 36 8 1 TERNET, TZ
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
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 5136 4918 2417 AMAZON-02, US
396982 2927 3659 447 GOOGLE-CLOUD-PLATFORM, US
714 1152 4392 5 APPLE-ENGINEERING, US
14618 1014 4445 774 AMAZON-AES, US
15169 953 2012 73 GOOGLE, US
8075 720 16017 608 MICROSOFT-CORP-MSN-AS-BLOCK, US
2907 623 2170 464 SINET-AS Research Organization of Informa
36914 557 82 3 KENET-AS, KE
2152 532 507 99 CENIC-2152, US
7497 451 180 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 2927 2480 GOOGLE-CLOUD-PLATFORM, US
714 1152 1147 APPLE-ENGINEERING, US
15169 953 880 GOOGLE, US
36914 557 554 KENET-AS, KE
2152 532 433 CENIC-2152, US
7497 451 427 CSTNET-AS-AP Computer Network Information Cente
2018 380 309 TENET-1, ZA
14618 1014 240 AMAZON-AES, US
5786 198 197 UPRENET, PR
1916 237 195 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
/13:52 /14:117 /15:233 /16:2418 /17:622 /18:597
/19:867 /20:3041 /21:1582 /22:2293 /23:2459 /24:18034
/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 852 5136 AMAZON-02, US
36914 533 557 KENET-AS, KE
14618 320 1014 AMAZON-AES, US
15169 269 953 GOOGLE, US
396982 268 2927 GOOGLE-CLOUD-PLATFORM, US
8075 126 720 MICROSOFT-CORP-MSN-AS-BLOCK, US
8895 107 110 ISU Internet Services Unit ISU, SA
2152 62 532 CENIC-2152, US
23024 36 97 OCDE, US
37182 35 36 TERNET, TZ
Complete listing at https://bgp.nsrc.org/REN/PacWave/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 2:1 3:275 4:2 5:26 6:4
8:28 12:2 13:166 14:93 15:136 16:129
17:304 18:327 23:130 24:3 31:6 34:23
35:97 36:1 37:8 38:11 40:6 41:257
42:11 43:2 44:4 45:93 46:13 47:1
49:12 50:13 52:857 54:180 57:14 58:1
59:19 60:6 61:3 62:16 63:46 64:184
65:49 66:120 67:77 68:25 69:68 70:37
71:33 72:22 74:165 75:1 76:43 77:12
78:3 79:10 80:14 81:25 82:7 83:9
84:9 85:57 86:6 87:6 88:1 89:22
91:58 92:9 93:46 94:7 95:3 96:6
97:1 98:15 99:78 101:1 102:17 103:377
104:267 107:42 108:169 109:8 111:22 113:5
114:32 115:1 116:14 117:67 118:33 119:30
121:28 122:11 123:8 124:42 125:5 128:60
129:44 130:170 131:78 132:64 133:156 134:109
135:7 136:313 137:121 138:71 139:21 140:47
141:16 142:349 143:39 144:71 145:8 146:140
147:78 148:210 149:20 150:77 151:54 152:151
153:14 154:45 155:110 156:135 157:40 158:43
159:166 160:39 161:53 162:113 163:78 164:29
165:85 166:5 167:40 168:186 169:14 170:216
171:1 172:129 173:125 174:2 175:16 176:6
177:6 178:3 179:14 180:16 181:1 182:11
184:9 185:150 186:3 187:22 188:20 189:3
190:33 191:13 192:1715 193:333 194:142 195:90
196:149 197:341 198:648 199:408 200:336 201:38
202:663 203:469 204:451 205:220 206:256 207:361
208:169 209:279 210:223 211:3 212:160 213:22
214:9 216:266 217:17 218:23 219:6 220:16
222:2 223:15
End of report
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