[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 Mar 5 22:35:54 UTC 2025
IPv4 R&E Routing Table Report 22:35 GMT Wed 05 Mar, 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: 32447
Prefixes after maximum aggregation (per Origin AS): 15661
Deaggregation factor: 2.07
Unique aggregates announced (without unneeded subnets): 18726
Total ASes present in the Internet Routing Table: 2885
Prefixes per ASN: 11.25
Origin-only ASes present in the Internet Routing Table: 2513
Origin ASes announcing only one prefix: 1092
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: 19
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: 46211
Number of 32-bit ASNs visible in the Routing Table: 725
Prefixes from 32-bit ASNs in the Routing Table: 5024
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: 345716224
Equivalent to 20 /8s, 155 /16s and 54 /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: 4275
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4783
Total APNIC prefixes after maximum aggregation: 2299
APNIC Deaggregation factor: 2.08
Prefixes being announced from the APNIC address blocks: 5006
Unique aggregates announced from the APNIC address blocks: 2879
APNIC Region origin ASes present in the Internet Routing Table: 594
APNIC Prefixes per ASN: 8.43
APNIC Region origin ASes announcing only one prefix: 242
APNIC Region transit ASes present in the Internet Routing Table: 56
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: 239
Number of APNIC addresses announced to Internet: 47345664
Equivalent to 2 /8s, 210 /16s and 112 /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: 21335
Total ARIN prefixes after maximum aggregation: 9699
ARIN Deaggregation factor: 2.20
Prefixes being announced from the ARIN address blocks: 20530
Unique aggregates announced from the ARIN address blocks: 11278
ARIN Region origin ASes present in the Internet Routing Table: 1360
ARIN Prefixes per ASN: 15.10
ARIN Region origin ASes announcing only one prefix: 472
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: 237
Number of ARIN addresses announced to Internet: 209548288
Equivalent to 12 /8s, 125 /16s and 116 /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: 3698
Total RIPE prefixes after maximum aggregation: 2948
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 4261
Unique aggregates announced from the RIPE address blocks: 3615
RIPE Region origin ASes present in the Internet Routing Table: 664
RIPE Prefixes per ASN: 6.42
RIPE Region origin ASes announcing only one prefix: 294
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: 14
Number of RIPE region 32-bit ASNs visible in the Routing Table: 154
Number of RIPE addresses announced to Internet: 81561344
Equivalent to 4 /8s, 220 /16s and 135 /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: 1484
Total LACNIC prefixes after maximum aggregation: 541
LACNIC Deaggregation factor: 2.74
Prefixes being announced from the LACNIC address blocks: 1490
Unique aggregates announced from the LACNIC address blocks: 718
LACNIC Region origin ASes present in the Internet Routing Table: 157
LACNIC Prefixes per ASN: 9.49
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: 65
Number of LACNIC addresses announced to Internet: 4727808
Equivalent to 0 /8s, 72 /16s and 36 /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: 1143
Total AfriNIC prefixes after maximum aggregation: 170
AfriNIC Deaggregation factor: 6.72
Prefixes being announced from the AfriNIC address blocks: 1150
Unique aggregates announced from the AfriNIC address blocks: 226
AfriNIC Region origin ASes present in the Internet Routing Table: 49
AfriNIC Prefixes per ASN: 23.47
AfriNIC Region origin ASes announcing only one prefix: 30
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2528512
Equivalent to 0 /8s, 38 /16s and 149 /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
1237 193 74 147 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 146 19 20 NKN-CORE-NW NKN Core Network, IN
4538 140 4192 71 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 68 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 5135 4948 2413 AMAZON-02, US
396982 2935 3660 454 GOOGLE-CLOUD-PLATFORM, US
714 1155 4392 5 APPLE-ENGINEERING, US
14618 1020 4445 780 AMAZON-AES, US
15169 942 2012 73 GOOGLE, US
8075 721 16017 608 MICROSOFT-CORP-MSN-AS-BLOCK, US
2152 533 507 99 CENIC-2152, US
2920 226 44 49 LACOE, US
668 212 648 179 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
786 197 1751 186 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 91 244 66 AMAZON EXPANSION, IE
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 75 366 75 BELWUE BelWue-Koordination, DE
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
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 53 5 17 CEDIA, EC
2715 50 100 36 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 550 82 3 KENET-AS, KE
2018 380 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 33 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
37501 11 49 6 UOFS, ZA
327700 10 16 1 MoRENet, MZ
36982 8 33 8 UCT, ZA
37654 8 1 5 RwEdNet-AS, RW
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 5135 4948 2413 AMAZON-02, US
396982 2935 3660 454 GOOGLE-CLOUD-PLATFORM, US
714 1155 4392 5 APPLE-ENGINEERING, US
14618 1020 4445 780 AMAZON-AES, US
15169 942 2012 73 GOOGLE, US
8075 721 16017 608 MICROSOFT-CORP-MSN-AS-BLOCK, US
2907 624 2170 464 SINET-AS Research Organization of Informa
36914 550 82 3 KENET-AS, KE
2152 533 507 99 CENIC-2152, US
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 2935 2481 GOOGLE-CLOUD-PLATFORM, US
714 1155 1150 APPLE-ENGINEERING, US
15169 942 869 GOOGLE, US
36914 550 547 KENET-AS, KE
2152 533 434 CENIC-2152, US
7497 452 428 CSTNET-AS-AP Computer Network Information Cente
2018 380 309 TENET-1, ZA
14618 1020 240 AMAZON-AES, US
5786 198 197 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
/13:52 /14:117 /15:234 /16:2424 /17:619 /18:599
/19:871 /20:3045 /21:1584 /22:2309 /23:2495 /24:18042
/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 849 5135 AMAZON-02, US
36914 526 550 KENET-AS, KE
14618 321 1020 AMAZON-AES, US
396982 272 2935 GOOGLE-CLOUD-PLATFORM, US
15169 269 942 GOOGLE, US
8075 128 721 MICROSOFT-CORP-MSN-AS-BLOCK, US
8895 107 110 ISU Internet Services Unit ISU, SA
2152 63 533 CENIC-2152, US
23024 36 97 OCDE, US
32440 33 58 LONI, US
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 5:26 6:4
8:28 12:2 13:166 14:93 15:137 16:132
17:309 18:327 23:129 24:3 31:6 34:23
35:98 36:1 37:8 38:11 40:6 41:219
42:11 43:2 44:4 45:91 46:13 47:1
49:12 50:13 52:856 54:179 57:14 58:1
59:19 60:6 61:3 62:16 63:46 64:183
65:48 66:120 67:77 68:25 69:70 70:37
71:33 72:22 74:165 75:1 76:43 77:12
78:3 79:10 80:14 81:25 82:7 83:8
84:9 85:57 86:6 87:6 88:1 89:22
91:60 92:9 93:46 94:8 95:3 96:6
97:1 98:15 99:78 101:1 102:16 103:426
104:270 107:42 108:168 109:8 111:22 113:5
114:32 115:1 116:14 117:67 118:33 119:30
121:27 122:11 123:8 124:42 125:5 128:59
129:43 130:169 131:78 132:65 133:156 134:113
135:7 136:313 137:122 138:71 139:27 140:48
141:16 142:347 143:39 144:55 145:8 146:140
147:78 148:210 149:19 150:77 151:54 152:152
153:14 154:45 155:109 156:135 157:40 158:43
159:166 160:40 161:56 162:113 163:78 164:29
165:85 166:5 167:40 168:186 169:14 170:225
171:1 172:127 173:124 174:2 175:16 176:6
177:6 178:3 179:14 180:16 181:1 182:12
184:9 185:152 186:3 187:24 188:20 189:3
190:33 191:13 192:1720 193:331 194:140 195:90
196:146 197:335 198:651 199:413 200:336 201:38
202:633 203:470 204:460 205:222 206:256 207:361
208:172 209:276 210:224 211:3 212:160 213:22
214:9 216:266 217:17 218:23 219:6 220:16
222:2 223:15
End of report
More information about the ren-bgp-stats-all
mailing list